[WebGPU] Device should not inherit from both CanMakeWeakPtr and ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr
radar://122254591
Pull request: https://github.com/WebKit/WebKit/pull/23836
Committed 274081@main (0e04da7846ec): <https://commits.webkit.org/274081@main> Reviewed commits have been landed. Closing PR #23836 and removing active labels.