Brian Vaughn aacb06c594 Fix React Native AsyncMode and DevTools
Summary:
Fixes two problems I uncovered with React Native:
1. `FBCore/Prelude` points to `React.unstable_AsyncMode` which is not defined. (This type was renamed to `React.unstable_ConcurrentMode` in React v16.6.0. **As a result** people in the "react_native:async_rendering" GK will no longer get runtime errors on app start.
2. Updates `react-devtools` and (more importantly) `react-devtools-core` to 3.4.2 to handle the React-internal tag/type refactoring that happened prior to the release of 16.6.0. **As a result** DevTools will no longer cause a runtime error when connected to React Native.

For the second change, I ran `js1 upgrade react-devtools -v ^3.4.2`

Reviewed By: sebmarkbage

Differential Revision: D13030590

fbshipit-source-id: 603f7f6259f282839039820bcdba4310064a7965
2018-11-15 09:26:01 -08:00
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2018-11-01 14:29:16 -07:00