Prior to this commit, Spring would create directly `SimpleMetadataReaderFactory` instances or would manually create `CachingMetadataReaderFactory` which extend `SimpleMetadataReaderFactory`. This would prevent usage of the new `ClassFileMetadataReaderFactory` in our internal codebase. This commit replaces manual instantiations with calls to `MetadataReaderFactory` factory methods and makes `CachingMetadataReaderFactory` delegate to another factory created with the same factory methods. This allows internal usage of `ClassFileMetadataReaderFactory` internally. Closes gh-33616
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