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Don't support older isomorphic React with newer renderers (#18329)

* Don't support older isomorphic React with newer renderers

* Remove the lazy hack
D
Dan Abramov committed
26666427d6ed5cbc581e65e43608fa1acec3bcf8
Parent: 3a0076e
Committed by GitHub <noreply@github.com> on 3/17/2020, 7:30:10 PM