[DOM] move `flushSync` out of the reconciler#28500

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gnoff merged 1 commit intofacebook:mainfrom

gnoff:flushsync

Apr 8, 2024

Commits on Apr 8, 2024

Implements flushSync in react-dom without relying on the reconciler. This will only be available in builds that no longer support legacy mode because the reconciler flushSync has special logic for …
gnoff
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