Revert "Roll engine 77c5812d48b8..84dc383b6428 (16 commits)" #51212
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Reverts #51072
This caused a regression in cull_opacity_perf__timeline_summary bad enough to where it times out -and if it doesn't timeout, it's just way worse.
/cc @iskakaushik @jmagman @jason-simmons
Will land TBR