Window jitters when resizing

[elicwhite]

Environment

1. react-native -v:
2. npm ls react-native-macos: 0.61.38
3. node -v:
4. npm -v:
5. yarn --version:
6. xcodebuild -version:

Issue

When resizing a window with a ScrollView in it the contents constantly rubberband.

Steps to Reproduce

1. Open RNTester (or any app screen with a scrollview)
2. Resize
3. 😭

[elicwhite]

Duplicate of #322