Update react monorepo to v15.7.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
react (source)	15.6.1 -> 15.7.0
react-dom (source)	15.6.1 -> 15.7.0

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Release Notes

facebook/react (react)

v15.7.0

Compare Source

React

• Backport support for the new JSX transform to 15.x. (@​lunaruan in #​18299 and @​gaearon in #​20024)

v15.6.2

Compare Source

All Packages

• Switch from BSD + Patents to MIT license

React DOM

• Fix a bug where modifying document.documentMode would trigger IE detection in other browsers, breaking change events. (@​aweary in #​10032)
• CSS Columns are treated as unitless numbers. (@​aweary in #​10115)
• Fix bug in QtWebKit when wrapping synthetic events in proxies. (@​walrusfruitcake in #​10115)
• Prevent event handlers from receiving extra argument in development. (@​aweary in #​10115)
• Fix cases where onChange would not fire with defaultChecked on radio inputs. (@​jquense in #​10156)
• Add support for controlList attribute to allowed DOM properties (@​nhunzaker in #​9940)
• Fix a bug where creating an element with a ref in a constructor did not throw an error in development. (@​iansu in #​10025)

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