Stop using CheckedPtr / CheckedRef in TreeScopeOrderedMap.h. Use WeakPtr / WeakRef instead to generate more actionable crashes. This tested as performance neutral on Speedometer 2 & 3.
Pull request: https://github.com/WebKit/WebKit/pull/21759
<rdar://problem/119630913>
Committed 272015@main (23026ae16e81): <https://commits.webkit.org/272015@main> Reviewed commits have been landed. Closing PR #21759 and removing active labels.