#10862 loadClassMetadata vs loadValidatorMetadata: revert default config
bug #11047 #10862 loadClassMetadata vs loadValidatorMetadata: revert default config (phramz)

This PR was squashed before being merged into the 2.5 branch (closes #11047).

Discussion
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#10862 loadClassMetadata vs loadValidatorMetadata: revert default config

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #10862
| License       | MIT
| Doc PR        |

Commits
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3bde718 #10862 loadClassMetadata vs loadValidatorMetadata: revert default config