Remove @Valid even for enum types defined in components

[CREKD127]

fixes #18430

PR checklist

• Read the contribution guidelines.
• Pull Request title clearly describes the work in the pull request and Pull Request description provides details about how to validate the work. Missing information here may result in delayed response from the community.
• Run the following to build the project and update samples:

  ./mvnw clean package 
  ./bin/generate-samples.sh ./bin/configs/*.yaml
  ./bin/utils/export_docs_generators.sh
  

  (For Windows users, please run the script in Git BASH)
  Commit all changed files.
  This is important, as CI jobs will verify all generator outputs of your HEAD commit as it would merge with master.
  These must match the expectations made by your contribution.
  You may regenerate an individual generator by passing the relevant config(s) as an argument to the script, for example ./bin/generate-samples.sh bin/configs/java*.
  IMPORTANT: Do NOT purge/delete any folders/files (e.g. tests) when regenerating the samples as manually written tests may be removed.
• File the PR against the correct branch: master (upcoming 7.1.0 minor release - breaking changes with fallbacks), 8.0.x (breaking changes without fallbacks)
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[wing328]

thanks for the PR. please follow step 3 to update the samples so that CI can verify the change

[CREKD127]

@wing328
Is this correctly following step3?

[wing328]

don't think so. let me try to fix it for you later

[wing328]

update: i've filed #18453 instead

[wing328]

cc
@bbdouglas (2017/07) @sreeshas (2017/08) @jfiala (2017/08) @lukoyanov (2017/09) @cbornet (2017/09) @jeff9finger (2018/01) @karismann (2019/03) @Zomzog (2019/04) @lwlee2608 (2019/10) @martin-mfg (2023/08)

[CREKD127]

link discussion
https://github.com/OpenAPITools/openapi-generator/pull/18453/files#r1590468559

[wing328]

i've just merged #18606 to improve the tests in the jaxrs-spec generator.

can you please merge the latest master into your branch and add a test or 2 in modules/openapi-generator/src/test/resources/3_0/jaxrs-spec/petstore-with-fake-endpoints-models-for-testing.yaml ?

[wing328]

update: added a test via #18664. please have a look to sese if the result looks good to you.

[wing328]

filed and merged #18697 as a follow-up PR