RFE: good practices validator only warn for empty CRD desc if spec.customresourcedefinitions in csv is not empty

[HarikrishnanBalagopal]

https://github.com/operator-framework/api/blob/28c6773d2b746559369035cfa3d211360706a247/pkg/validation/internal/good_practices.go#L243

This warning is always returned, even when you are not using the customresourcedefinitions field. Example:

spec:
  apiservicedefinitions: {}
  customresourcedefinitions: {}

It's even in the docs where the show how to validate the bundle https://sdk.operatorframework.io/docs/advanced-topics/custom-bundle-validation/

[github-actions[bot]]

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