### Godot version

v4.0.stable.official [92bee43ad]

### System information

Linux - v4.0.stable.official [92bee43ad]

### Issue description

It gives you the possibility of removing unexisting key/value pairs from a dictionary.

### Steps to reproduce

![image](https://github.com/godotengine/godot/assets/69520693/35beadbe-bfdd-4176-9b26-222bbf69cafa)
![image](https://github.com/godotengine/godot/assets/69520693/7ed647e0-a2af-4e58-9f00-f77b7bc7bb02)
![image](https://github.com/godotengine/godot/assets/69520693/f08bf824-8408-45eb-bb84-f1dc7e19e392)


### Minimal reproduction project

N/A
hbox->add_child(remove_btn);
			}
			prop->update_property();
		}
		if (reorder_to_index % page_length > 0) {
			property_vbox->move_child(property_vbox->get_child(0), reorder_to_index % page_length);
		}
		updating = false;
	} else {
		if (container) {
			set_bottom_editor(nullptr);
			memdelete(container);
			button_add_item = nullptr;
			container = nullptr;
		}
	}
}
void EditorPropertyArray::_remove_pressed(int p_index) {
	Variant array = object->get_array().duplicate();
	array.call("remove_at", p_index);
	emit_changed(get_edited_property(), array, "", false);
	update_property();
}
void EditorPropertyArray::_button_draw() {
	if (dropping) {
		Color color = get_theme_color(SNAME("accent_color"), SNAME("Editor"));
		edit->draw_rect(Rect2(Point2(), edit->get_size()), color, false);
	}
}
bool EditorPropertyArray::_is_drop_valid(const Dictionary &p_drag_data) const {