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Automatic merge from submit-queue (batch tested with PRs 55093, 54966, 55047, 54971, 54786). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Don't panic on unexpected group version for mutated selector **What this PR does / why we need it**: `panic` on unknown group version will crash the whole apiserver (even when selector isn't mutated), have a single resource affect the whole cluster, and make debugging harder. ~Return an internal error (i.e. not user error) instead.~ Make "selector immutability" the default behavior instead. **Which issue(s) this PR fixes**: ref #54575 **Special notes for your reviewer**: @kubernetes/sig-apps-bugs @liggitt **Release note**: ```release-note NONE ```