HHH-19229 Faster checks in ReflectHelper

[obourgain]

Make the checks in ReflectHelper faster.
See detailed description in Jira

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[obourgain]

pipeline seems to be stuck

[sebersole]

The oracle job failure is an occasional, transient problem - probably not anything wrong with your PR.

The code analysis though you will need to resolve.

[mbellade]

Left a couple comments. I found it weird that tests were passing since the checks you implemented were not correct, and I found some duplicated logic in org.hibernate.property.access.internal.AccessStrategyHelper#checkIsMethodVariant.

Could you please delete this method and ensure we use ReflectHelper#verifyNoIsVariantExists instead?