feat(plugin): multiple worklet referencing

[tjzel]

Summary

Some time ago I added a feature of worklet referencing to the Plugin, but this was limited to only a single reference:

function foo(){
	// UI stuff
};

runOnUI(foo)(); // ok, `foo` will get workletized

function bar(){
	// UI stuff
};

const foobar = bar;

runOnUI(foobar); // error, foobar didn't get workletized

This PR allows for any amount of references in the reference chain. Simultaneously I discovered that Gesture Handler callbacks didn't benefit from worklet referencing, i.e. the following code would be invalid:

function foo(){
	// do something
}

const pan = Gesture.Pan().onActive(foo) // `foo` wouldn't be workletized

This PR adds this QoL feat for Gesture Handler callbacks.

Test plan

I added new unit tests for these cases.