Fixes #17447 -MethodAccessException on equality comparison of a record with private fields

[KevinRansom]

Fixes: #17447

The generation of Augmented Equals methods, were created with an incorrect visibility. It should have restricted the visibility to match the type that contained the method. Instead it set the visibility to match the scope of the field.
I.e private.

This meant that the compiler generated it:

.method assembly hidebysig instance bool Equals (class Module1/Value obj, class [mscorlib]System.Collections.IEqualityComparer comp) cil managed 

However, because the type is: 'class Module1/Value' it should be marked public

.method public hidebysig  instance bool Equals (class Module1/Value obj, class [mscorlib]System.Collections.IEqualityComparer comp) cil managed 

[github-actions]

❗ Release notes required

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✅ Found changes and release notes in following paths:

Change path	Release notes path	Description
src/Compiler	docs/release-notes/.FSharp.Compiler.Service/9.0.100.md