Work towards various Live Text enhancements.
rdar://83173238
Created attachment 444445 [details] Depends on #233075
Created attachment 444553 [details] Rebase on trunk
Created attachment 444555 [details] Remove redundant PAL ChangeLog
Created attachment 444558 [details] Remove unnecessary WebCore namespacing
Created attachment 444568 [details] Patch
Created attachment 444613 [details] Update ChangeLog date
Committed r285973 (244370@main): <https://commits.webkit.org/244370@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 444613 [details].