Update dependency react to v16.12.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
react (source)	dependencies	minor	16.9.0 -> 16.12.0

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Release Notes

facebook/react

v16.12.0

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React DOM

• Fix passive effects (useEffect) not being fired in a multi-root app. (@​acdlite in #​17347)

React Is

• Fix lazy and memo types considered elements instead of components (@​bvaughn in #​17278)

v16.11.0

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React DOM

• Fix mouseenter handlers from firing twice inside nested React containers. @​yuanoook in #​16928
• Remove unstable_createRoot and unstable_createSyncRoot experimental APIs. (These are available in the Experimental channel as createRoot and createSyncRoot.) (@​acdlite in #​17088)

v16.10.2

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React DOM

• Fix regression in react-native-web by restoring order of arguments in event plugin extractors (@​necolas in #​16978)

v16.10.1

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React DOM

• Fix regression in Next.js apps by allowing Suspense mismatch during hydration to silently proceed (@​sebmarkbage in #​16943)

v16.10.0

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React DOM

• Fix edge case where a hook update wasn't being memoized. (@​sebmarkbage in #​16359)
• Fix heuristic for determining when to hydrate, so we don't incorrectly hydrate during an update. (@​sebmarkbage in #​16739)
• Clear additional fiber fields during unmount to save memory. (@​trueadm in #​16807)
• Fix bug with required text fields in Firefox. (@​halvves in #​16578)
• Prefer Object.is instead of inline polyfill, when available. (@​ku8ar in #​16212)
• Fix bug when mixing Suspense and error handling. (@​acdlite in #​16801)

Scheduler (Experimental)

• Improve queue performance by switching its internal data structure to a min binary heap. (@​acdlite in #​16245)
• Use postMessage loop with short intervals instead of attempting to align to frame boundaries with requestAnimationFrame. (@​acdlite in #​16214)

useSubscription

• Avoid tearing issue when a mutation happens and the previous update is still in progress. (@​bvaughn in #​16623)

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