Disable Structure::checkConsistency() when assertion are disabled. This is a 0.35% progression on Speedometer 2.1 on Apple Silicon.
Pull request: https://github.com/WebKit/WebKit/pull/3479
Committed 253608@main (775eb2d48c68): <https://commits.webkit.org/253608@main> Reviewed commits have been landed. Closing PR #3479 and removing active labels.
<rdar://problem/98902375>