### 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
return _is_drop_valid(p_data);
}
void EditorPropertyArray::drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) {
	ERR_FAIL_COND(!_is_drop_valid(p_data));
	Dictionary drag_data = p_data;
	if (drag_data.has("type") && String(drag_data["type"]) == "files") {
		Vector<String> files = drag_data["files"];
		Variant array = object->get_array();
		
		if (!array.is_array()) {
			initialize_array(array);
		} else {
			array = array.duplicate();
		}
		
		for (int i = 0; i < files.size(); i++) {
			String file = files[i];
			Ref<Resource> res = ResourceLoader::load(file);
			if (res.is_valid()) {
				array.call("push_back", res);
			}
		}
		emit_changed(get_edited_property(), array, "", false);
		update_property();
	}
}
void EditorPropertyArray::_notification(int p_what) {