### 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_using_font_oversampling"), &Window::is_using_font_oversampling);
	ClassDB::bind_method(D_METHOD("set_mouse_passthrough_polygon", "polygon"), &Window::set_mouse_passthrough_polygon);
	ClassDB::bind_method(D_METHOD("get_mouse_passthrough_polygon"), &Window::get_mouse_passthrough_polygon);
	ClassDB::bind_method(D_METHOD("set_wrap_controls", "enable"), &Window::set_wrap_controls);
	ClassDB::bind_method(D_METHOD("is_wrapping_controls"), &Window::is_wrapping_controls);
	ClassDB::bind_method(D_METHOD("child_controls_changed"), &Window::child_controls_changed);
	ClassDB::bind_method(D_METHOD("_update_child_controls"), &Window::_update_child_controls);
	ClassDB::bind_method(D_METHOD("_update_embedded_window"), &Window::_update_embedded_window);
	ClassDB::bind_method(D_METHOD("set_theme", "theme"), &Window::set_theme);
	ClassDB::bind_method(D_METHOD("get_theme"), &Window::get_theme);
	ClassDB::bind_method(D_METHOD("set_theme_type_variation", "theme_type"), &Window::set_theme_type_variation);
	ClassDB::bind_method(D_METHOD("get_theme_type_variation"), &Window::get_theme_type_variation);
	ClassDB::bind_method(D_METHOD("begin_bulk_theme_override"), &Window::begin_bulk_theme_override);
	ClassDB::bind_method(D_METHOD("end_bulk_theme_override"), &Window::end_bulk_theme_override);
	ClassDB::bind_method(D_METHOD("add_theme_icon_override", "name", "texture"), &Window::add_theme_icon_override);
	ClassDB::bind_method(D_METHOD("add_theme_stylebox_override", "name", "stylebox"), &Window::add_theme_style_override);
	ClassDB::bind_method(D_METHOD("add_theme_font_override", "name", "font"), &Window::add_theme_font_override);
	ClassDB::bind_method(D_METHOD("add_theme_font_size_override", "name", "font_size"), &Window::add_theme_font_size_override);
	ClassDB::bind_method(D_METHOD("add_theme_color_override", "name", "color"), &Window::add_theme_color_override);
	ClassDB::bind_method(D_METHOD("add_theme_constant_override", "name", "constant"), &Window::add_theme_constant_override);
	ClassDB::bind_method(D_METHOD("remove_theme_icon_override", "name"), &Window::remove_theme_icon_override);
	ClassDB::bind_method(D_METHOD("remove_theme_stylebox_override", "name"), &Window::remove_theme_style_override);
	ClassDB::bind_method(D_METHOD("remove_theme_font_override", "name"), &Window::remove_theme_font_override);
	ClassDB::bind_method(D_METHOD("remove_theme_font_size_override", "name"), &Window::remove_theme_font_size_override);
	ClassDB::bind_method(D_METHOD("remove_theme_color_override", "name"), &Window::remove_theme_color_override);
	ClassDB::bind_method(D_METHOD("remove_theme_constant_override", "name"), &Window::remove_theme_constant_override);
	ClassDB::bind_method(D_METHOD("get_theme_icon", "name", "theme_type"), &Window::get_theme_icon, DEFVAL(""));
	ClassDB::bind_method(D_METHOD("get_theme_stylebox", "name", "theme_type"), &Window::get_theme_stylebox, DEFVAL(""));
	ClassDB::bind_method(D_METHOD("get_theme_font", "name", "theme_type"), &Window::get_theme_font, DEFVAL(""));
	ClassDB::bind_method(D_METHOD("get_theme_font_size", "name", "theme_type"), &Window::get_theme_font_size, DEFVAL(""));