Avoid unnecessary isolatedCopy() calls when decoding strings in WKRemoteObjectCoder.mm.
Pull request: https://github.com/WebKit/WebKit/pull/2140
Committed 252217@main (f6600b2b275f): <https://commits.webkit.org/252217@main> Reviewed commits have been landed. Closing PR #2140 and removing active labels.
<rdar://problem/96601052>