Stop using Vector::unsafeAppendWithoutCapacityCheck() in DFGByteCodeParser.cpp.
Pull request: https://github.com/WebKit/WebKit/pull/20289
Committed 270532@main (580a74956844): <https://commits.webkit.org/270532@main> Reviewed commits have been landed. Closing PR #20289 and removing active labels.
<rdar://problem/118235141>