Fix hitSlop on Gesture Handler buttons

[j-piasecki]

Description

This PR does two things:

• (iOS) sets hitTestEdgeInsets on RNGestureHandlerButton when Fabric is enabled
• (Android) sets clipChildren to false on ButtonViewGroup

The second change makes the button behavior consistent with iOS where its content isn't clipped. It also fixes #1242 because of this line, which tried to extract handlers from view when it's not clipping children.

Test plan

Tested on the Example app.

[hirbod]

@j-piasecki RN 0.68.1 does support single value hitSlop values now (together with the old object notation - hitSlop={10})
Would you consider to also add this to be more streamlined with RN?

[j-piasecki]

@hirbod It should be possible already, because the hitSlop property is transformed when it's not an object. I tried it on a simple touchable and it worked fine, although the types seem to be wrong, I'll look into it.

[lightrow]

can this please be looked at? This is a major annoyance

[magrinj]

@j-piasecki Are you able to get this merged soon ? I'm facing the same issue on my side too mostly on Android devices, it's really annoying and frustrating for the users