Stop using UncheckedLock in Condition API tests. This is a step towards phasing out UncheckedLock in favor the Lock so that we can benefit from Clang Thread Safety Analysis.
Created attachment 429585 [details] Patch
Committed r277992 (238105@main): <https://commits.webkit.org/238105@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 429585 [details].
<rdar://problem/78432963>