fix(fabric): prevent freeze on layout update during transition

[krozniata]

Summary

This PR fixes issue causing component to freeze when layout was updated during transition

When layout was updated e.g. because of hiding keyboard, setViewControllers completion block was never called, which resulted in swipe being disabled

It fixes this issue by preventing layout update during transition phase and updating it after transition ends

Test Plan

1. Build the example app.
2. Go to the Keyboard Example menu.
3. Touch the TextInput to show the keyboard.
4. Press the Next page button. (might be required to modify ControlPanel to move button above keyboard)
5. Should navigate correctly, should be able to interact

Other examples should work as before

Compatibility

OS	Implemented
iOS	✅
Android	❌

[MrRefactor]

LGTM, is that issue Fabric only?

[floydkim]

Thank you for fixing the issue so quickly.

@MrRefactor this problem also occurs on Paper.
My bad. I didn’t include it in the issue description.

[troZee]

@floydkim could you test that fix on your end ?

[floydkim]

@troZee Sure, but my app runs on Paper, so I can’t apply this fix directly. Instead, I’ll test it with the example app.

[floydkim]

tested on fix/layout-freeze branch

Issue has been resolved on Fabric.

Paper (Sim.)	Fabric (Sim.)	Fabric (real device)
6.6.0-repro-paper.mp4	6.6.0-repro-fabric-2.mp4	6.6.0-repro-fabric-realde.ice.mov