### Godot version

v4.1.1.stable.official [bd6af8e0e]

### System information

Godot v4.1.1.stable - Debian GNU/Linux trixie/sid trixie - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (nvidia) - Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz (6 Threads)

### Issue description

`Area2D`s which extend beyond the bounds of the root viewport, eg. when using a `canvas_items` stretch mode, receive mouse input events even in the black bands letterboxing the game:

https://github.com/godotengine/godot/assets/441188/3beb962f-c1fa-4098-a375-f3d862013577


### Steps to reproduce

1. Set project stretch mode to either `canvas_items` or `viewport`
2. Have an `Area2D` whose `CollisionShape` extends beyond the bounds of the rendered region
3. Connect the `Area2D`'s `mouse_[entered|exited]` signal to something
4. Wave the mouse around in the black areas outside the rendered game

### Minimal reproduction project

Project used for video demo above:

[area2d-oob.zip](https://github.com/godotengine/godot/files/12207031/area2d-oob.zip)

This only demos `mouse_[entered|exited]`, but I first encountered this with the `Area2D.input_event` signal, where it received mouse clicks as well.
ClassDB::bind_method(D_METHOD("is_maximize_allowed"), &Window::is_maximize_allowed);
	ClassDB::bind_method(D_METHOD("request_attention"), &Window::request_attention);
	ClassDB::bind_method(D_METHOD("move_to_foreground"), &Window::move_to_foreground);
	ClassDB::bind_method(D_METHOD("set_visible", "visible"), &Window::set_visible);
	ClassDB::bind_method(D_METHOD("is_visible"), &Window::is_visible);
	ClassDB::bind_method(D_METHOD("hide"), &Window::hide);
	ClassDB::bind_method(D_METHOD("show"), &Window::show);
	ClassDB::bind_method(D_METHOD("set_transient", "transient"), &Window::set_transient);
	ClassDB::bind_method(D_METHOD("is_transient"), &Window::is_transient);
	ClassDB::bind_method(D_METHOD("set_exclusive", "exclusive"), &Window::set_exclusive);
	ClassDB::bind_method(D_METHOD("is_exclusive"), &Window::is_exclusive);
	ClassDB::bind_method(D_METHOD("set_unparent_when_invisible", "unparent"), &Window::set_unparent_when_invisible);
	ClassDB::bind_method(D_METHOD("can_draw"), &Window::can_draw);
	ClassDB::bind_method(D_METHOD("has_focus"), &Window::has_focus);
	ClassDB::bind_method(D_METHOD("grab_focus"), &Window::grab_focus);
	ClassDB::bind_method(D_METHOD("set_ime_active", "active"), &Window::set_ime_active);
	ClassDB::bind_method(D_METHOD("set_ime_position", "position"), &Window::set_ime_position);
	ClassDB::bind_method(D_METHOD("is_embedded"), &Window::is_embedded);
	ClassDB::bind_method(D_METHOD("get_contents_minimum_size"), &Window::get_contents_minimum_size);
	ClassDB::bind_method(D_METHOD("set_content_scale_size", "size"), &Window::set_content_scale_size);
	ClassDB::bind_method(D_METHOD("get_content_scale_size"), &Window::get_content_scale_size);
	ClassDB::bind_method(D_METHOD("set_content_scale_mode", "mode"), &Window::set_content_scale_mode);
	ClassDB::bind_method(D_METHOD("get_content_scale_mode"), &Window::get_content_scale_mode);
	ClassDB::bind_method(D_METHOD("set_content_scale_aspect", "aspect"), &Window::set_content_scale_aspect);
	ClassDB::bind_method(D_METHOD("get_content_scale_aspect"), &Window::get_content_scale_aspect);
	ClassDB::bind_method(D_METHOD("set_content_scale_stretch", "stretch"), &Window::set_content_scale_stretch);
	ClassDB::bind_method(D_METHOD("get_content_scale_stretch"), &Window::get_content_scale_stretch);
	ClassDB::bind_method(D_METHOD("set_content_scale_factor", "factor"), &Window::set_content_scale_factor);
	ClassDB::bind_method(D_METHOD("get_content_scale_factor"), &Window::get_content_scale_factor);
	ClassDB::bind_method(D_METHOD("set_use_font_oversampling", "enable"), &Window::set_use_font_oversampling);