Stop using UncheckedLock in JSC::SamplingProfiler as it is being phased out in favor of Lock, which supports clang thread safety analysis.
Created attachment 430085 [details] Patch
Committed r278243 (238280@main): <https://commits.webkit.org/238280@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 430085 [details].
<rdar://problem/78653120>