Fix relations not working when one of the child dependencies remounts without a render in the parent

[j-piasecki]

Description

Fixes #3265

As @gaearon pointed out in the issue:

I think what's happening here is that the library doesn't consider the fact that the contents of a ref can change over time without the parent knowing about it. Rather, it seems to be operating under assumption that a ref change at the bottom will always be accompanied by a state change near the top (wherever blocksExternalGesture is called).

That's unfortunately true, and the current API doesn't allow to use ref callbacks to handle this (nor would it be easy to update it to do that). This is one more point to the pile of reasons why the API needs an overhaul.

For the time being, I implemented a mechanism that allows GestureDetector to listen to the mounting and unmounting of gestures. This way it can react to a remount of a gesture it depends on and update the native side if necessary.

Test plan

Tested on the Example app and the reproducer from the issue

Android	iOS
Screen.Recording.2024-12-09.at.12.23.28.mov	Screen.Recording.2024-12-09.at.12.14.50.mov

[gaearon]

Would be great to start playing with it, can we get a canary release?

[j-piasecki]

There's been a release candidate release a while ago - https://www.npmjs.com/package/react-native-gesture-handler/v/2.22.0-rc.1