Mute failing searchable snapshot integ tests

[kotwanikunal]

Description

• Mute two failing searchable snapshot integ tests tracked here: [BUG] org.opensearch.snapshots.SearchableSnapshotIT.testCacheFilesAreClosedAfterUse is flaky #6686, [BUG] org.opensearch.snapshots.SearchableSnapshotIT.testPruneFileCacheOnIndexDeletion is flaky #6738

Issues Resolved

• Failing gradle checks

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

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[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/12750/
• CommitID: 9c6d5b1
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[kotwanikunal]

#4789

Error Message
java.lang.AssertionError: 
Expected: within <10.0> percent of <125.0>
     but: was <110.28205128205128>
Stacktrace
java.lang.AssertionError: 
Expected: within <10.0> percent of <125.0>
     but: was <110.28205128205128>
	at __randomizedtesting.SeedInfo.seed([2B5F53F89F2470AF:EF36BF34F0688EB6]:0)
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
	at org.junit.Assert.assertThat(Assert.java:964)
	at org.junit.Assert.assertThat(Assert.java:930)
	at org.opensearch.search.aggregations.metrics.MedianAbsoluteDeviationAggregatorTests.lambda$testQueryFiltering$11(MedianAbsoluteDeviationAggregatorTests.java:154)
	at org.opensearch.search.aggregations.AggregatorTestCase.testCase(AggregatorTestCase.java:619)
	at org.opensearch.search.aggregations.metrics.MedianAbsoluteDeviationAggregatorTests.testAggregation(MedianAbsoluteDeviationAggregatorTests.java:255)
	at org.opensearch.search.aggregations.metrics.MedianAbsoluteDeviationAggregatorTests.testAggregation(MedianAbsoluteDeviationAggregatorTests.java:245)
	at org.opensearch.search.aggregations.metrics.MedianAbsoluteDeviationAggregatorTests.testQueryFiltering(MedianAbsoluteDeviationAggregatorTests.java:149)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:578)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1750)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:938)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:974)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:988)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:48)
	at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
	at org.apache.lucene.tests.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)
	at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
	at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/12752/
• CommitID: 9c6d5b1