Fix global position for InputEventMouse in viewport::push_input

[Sauermann]

Global position doesn't get adjusted within InputEventMouse::xformed_by().

resolve #88460
regression from #69598

[kleonc]

Tested a little, seems to work fine now. 👍

The change makes sense to me but I'm not that familiar with the input code though. 🙃

---

@Sauermann BTW pretty much the only place where Viewport::_make_input_local is used is:

godot/scene/main/viewport.cpp

Lines 3340 to 3345 in 5f05e2b

	Ref<InputEvent> ev;
	if (!p_local_coords) {
	ev = _make_input_local(p_event);
	} else {
	ev = p_event;
	}

So I wonder if InputEventMouse.global_position would be correct/meaningful in case p_local_coords is true? Not sure what is expected / how it's supposed to work, just mentioning in case you overlooked / haven't considered this.
But even it there's something to change it's likely for another PR / this one is good as is.

[Sauermann]

Thanks for the comment. p_local_coords == true means, that the coordinates don't need to be adjusted, because the event is already in the coordinate system of the viewport. I believe, that this is indeed the correct place for the change.

[akien-mga]

Thanks!

[kleonc]

Should be fine for cherry-picking?

[Sauermann]

Should be fine for cherry-picking?

Yes, it should be fine.

[akien-mga]

Cherry-picked for 4.2.2.
Cherry-picked for 4.1.4.