Summary:
When using React Native on Android on top of a game as an overlay, dialog windows sometimes get created with hardware acceleration disabled. This causes the UI to be unresponsive and anything that uses a TextureView stops working. Added a property for the modal view to make sure hardware acceleration flag is enabled when it's set to true.
**Test plan (required)**
set `hardwareAccelerated` property for Modal to force hardware acceleration on dialog windows on Android. Does nothing on iOS.
Closes https://github.com/facebook/react-native/pull/11421
Differential Revision: D4312912
Pulled By: andreicoman11
fbshipit-source-id: 9db6b2eca361421b92b24234b3501b5de0eecea7
3785db2fb1