### Godot version

v4.0.beta15.official [4fa6edc88]

### System information

Windows 11

### Issue description

When drawing a polygon in the editor, several duplicate vertices are added to the polygon array for each click.  In the image below, I clicked three times to draw the triangle, but got 10 entries.  The number you get varies, though I don't know why; I've seen hundreds of points from drawing a hexagon.  I tested it with a Polygon2D, a CollisionPolygon2D, and a CollisionPolygon3D; the issues occurs with all of them.  It later occurred to me that this might happen with a Curve2D as well, and it does.

![image](https://user-images.githubusercontent.com/2808851/214926182-b8609b87-85a1-4a08-8017-be4eeec912c6.png)


### Steps to reproduce

Add a node that has a Polygon or Curve resource, such as a Polygon2D, draw some points, then check the PackedVector2Array resource.

### Minimal reproduction project

N/A
}
	}
	file->set_file_mode(EditorFileDialog::FILE_MODE_SAVE_FILE);
	saving_resource = p_resource;
	current_menu_option = RESOURCE_SAVE_AS;
	List<String> extensions;
	Ref<PackedScene> sd = memnew(PackedScene);
	ResourceSaver::get_recognized_extensions(p_resource, &extensions);
	file->clear_filters();
	List<String> preferred;
	for (const String &E : extensions) {
		if (p_resource->is_class("Script") && (E == "tres" || E == "res")) {
			
			continue;
		}
		file->add_filter("*." + E, E.to_upper());
		preferred.push_back(E);
	}
	
	List<String>::Element *res_element = preferred.find("res");
	if (res_element) {
		preferred.move_to_back(res_element);
	}
	
	List<String>::Element *tres_element = preferred.find("tres");
	if (tres_element) {
		preferred.move_to_front(tres_element);
	}
	if (!p_at_path.is_empty()) {
		file->set_current_dir(p_at_path);