Automatic merge from submit-queue (batch tested with PRs 47851, 47824, 47858, 46099)

Revert 44714 manually

#44714 broke backward compatibility for old swagger spec that kubectl still uses. The decision on #47448 was to revert this change but the change was not automatically revertible. Here I semi-manually remove all references to UnixUserID and UnixGroupID and updated generated files accordingly.

Please wait for tests to pass then review that as there may still be tests that are failing.

Fixes #47448

Adding release note just because the original PR has a release note. If possible, we should remove both release notes as they cancel each other.

**Release note**: (removed by caesarxuchao)

UnixUserID and UnixGroupID is reverted back as int64 to keep backward compatibility.