Fullscreen UIScene adjustments are not reverted if the Web Content process crashes while in fullscreen
<rdar://problem/106107254>
Pull request: https://github.com/WebKit/WebKit/pull/10914
Committed 261051@main (76239d6da4e0): <https://commits.webkit.org/261051@main> Reviewed commits have been landed. Closing PR #10914 and removing active labels.