Add setting to disable the fullscreen requirement to lock screen orientation. This will be useful for Home Screen Web Apps, which are technically fullscreen but don't rely on the fullscreen API.
Pull request: https://github.com/WebKit/WebKit/pull/5385
Committed 255560@main (2ca6817c090a): <https://commits.webkit.org/255560@main> Reviewed commits have been landed. Closing PR #5385 and removing active labels.
<rdar://problem/101188843>