DateTimeParseException reading Instant column with Persistence 3.2

[ajaypaul-ibm]

Describe the bug
When Persistence 3.2 is used to query for an entity that has an attribute of type Instant, it gets a DateTimeParseException.

See test.jakarta.data.jpa.web.DemographicInfo, which has this attribute:

    @Column
    public Instant collectedOn;

and the following JPQL which read entities of that type:

SELECT o FROM DemographicInfo o WHERE (o.publicDebt BETWEEN ?1 AND ?2) ORDER BY o.publicDebt

The following exception is raised:

[6/19/24, 11:38:25:713 CDT] 00000051 id=00000000 eclipselink.ps                                               3 CWWKD0291W: Exception [EclipseLink-3002] (Eclipse Persistence Services - 5.0.0-B02.v202404111748): org.eclipse.persistence.exceptions.ConversionException
Exception Description: The object [2007-04-30 11:00:00.0], of class [class java.lang.String], from mapping [org.eclipse.persistence.mappings.DirectToFieldMapping[collectedOn-->WLPDemographicInfo.COLLECTEDON]] with descriptor [RelationalDescriptor(test.jakarta.data.jpa.web.DemographicInfo --> [DatabaseTable(WLPDemographicInfo)])], could not be converted to [class java.time.Instant].
Internal Exception: java.time.format.DateTimeParseException: Text '2007-04-30 11:00:00.0' could not be parsed at index 10
[6/19/24, 11:38:25:713 CDT] 00000051 id=00000000 eclipselink.ps                                               3 throwable 
                                                                                                               Local Exception Stack: 
Exception [EclipseLink-3002] (Eclipse Persistence Services - 5.0.0-B02.v202404111748): org.eclipse.persistence.exceptions.ConversionException
Exception Description: The object [2007-04-30 11:00:00.0], of class [class java.lang.String], from mapping [org.eclipse.persistence.mappings.DirectToFieldMapping[collectedOn-->WLPDemographicInfo.COLLECTEDON]] with descriptor [RelationalDescriptor(test.jakarta.data.jpa.web.DemographicInfo --> [DatabaseTable(WLPDemographicInfo)])], could not be converted to [class java.time.Instant].
Internal Exception: java.time.format.DateTimeParseException: Text '2007-04-30 11:00:00.0' could not be parsed at index 10
	at org.eclipse.persistence.exceptions.ConversionException.couldNotBeConverted(ConversionException.java:95)
	at org.eclipse.persistence.internal.helper.ConversionManager.convertObject(ConversionManager.java:251)
	at org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform.convertObject(DatasourcePlatform.java:252)
	at org.eclipse.persistence.mappings.foundation.AbstractDirectMapping.getObjectValue(AbstractDirectMapping.java:659)
	at org.eclipse.persistence.mappings.foundation.AbstractDirectMapping.valueFromRow(AbstractDirectMapping.java:1271)
	at org.eclipse.persistence.mappings.foundation.AbstractDirectMapping.buildCloneFromRow(AbstractDirectMapping.java:238)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildAttributesIntoWorkingCopyClone(ObjectBuilder.java:2109)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildWorkingCopyCloneFromRow(ObjectBuilder.java:2362)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObjectInUnitOfWork(ObjectBuilder.java:956)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObjectInternal(ObjectBuilder.java:842)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:797)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:775)
	at org.eclipse.persistence.queries.ObjectLevelReadQuery.buildObject(ObjectLevelReadQuery.java:924)
	at org.eclipse.persistence.queries.ReadAllQuery.registerResultInUnitOfWork(ReadAllQuery.java:987)
	at org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:598)
	at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:1297)
	at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:934)
	at org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1256)
	at org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:485)
	at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1344)
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:3015)
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1841)
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1823)
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1788)
	at org.eclipse.persistence.internal.jpa.QueryImpl.executeReadQuery(QueryImpl.java:263)
	at org.eclipse.persistence.internal.jpa.QueryImpl.getResultList(QueryImpl.java:480)
	at io.openliberty.data.internal.persistence.RepositoryImpl.invoke(RepositoryImpl.java:909)
	at jdk.proxy11/jdk.proxy11.$Proxy77.findByPublicDebtBetween(Unknown Source)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:38)
	at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:109)
	at test.jakarta.data.jpa.web.Demographics$210985159$Proxy$_$$_WeldClientProxy.findByPublicDebtBetween(Unknown Source)
	at test.jakarta.data.jpa.web.DataJPATestServlet.testBigDecimal(DataJPATestServlet.java:286)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at componenttest.app.FATServlet.doGet(FATServlet.java:74)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:633)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:723)
	at com.ibm.ws.tcpchannel.internal.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:169)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.time.format.DateTimeParseException: Text '2007-04-30 11:00:00.0' could not be parsed at index 10
	at java.base/java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:2108)
	at java.base/java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:2010)
	at java.base/java.time.Instant.parse(Instant.java:398)
	at org.eclipse.persistence.internal.helper.ConversionManager.convertObjectToInstant(ConversionManager.java:863)
	at org.eclipse.persistence.internal.helper.ConversionManager.convertObject(ConversionManager.java:196)
	... 63 more

Steps to Reproduce
Re-enable test.jakarta.data.jpa.web.DataJPATestServlet.testBigDecimal() and test.jakarta.data.jpa.web.DataJPATestServlet.testBigInteger(), which, despite their names, are also testing Instant. These had to be disabled when switching the server.xml from persistence-3.1 to persistence-3.2.

Expected behavior
Successful retrieval of the entity, as happens with Persistence 3.1.

Diagnostic information:

OpenLiberty Version: latest in development
Affected feature(s) persistence-3.2, which breaks data-1.0
Java Version:

java.home = /Users/njr/drivers/jdk-21.jdk/Contents/Home
java.version = 21
java.runtime = OpenJDK Runtime Environment (21+35-2513)
os = Mac OS X (14.5; aarch64) (en_US)

server.xml configuration - refer to test case