### 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
}
	}
	if (is_resource) {
		Resource *current_res = Object::cast_to<Resource>(current_obj);
		ERR_FAIL_COND(!current_res);
		InspectorDock::get_inspector_singleton()->edit(current_res);
		SceneTreeDock::get_singleton()->set_selected(nullptr);
		NodeDock::get_singleton()->set_node(nullptr);
		InspectorDock::get_singleton()->update(nullptr);
		ImportDock::get_singleton()->set_edit_path(current_res->get_path());
		int subr_idx = current_res->get_path().find("::");
		if (subr_idx != -1) {
			String base_path = current_res->get_path().substr(0, subr_idx);
			if (!base_path.is_resource_file()) {
				if (FileAccess::exists(base_path + ".import")) {
					if (get_edited_scene() && get_edited_scene()->get_scene_file_path() == base_path) {
						info_is_warning = true;
					}
					editable_info = TTR("This resource belongs to a scene that was imported, so it's not editable.\nPlease read the documentation relevant to importing scenes to better understand this workflow.");
				} else {
					if ((!get_edited_scene() || get_edited_scene()->get_scene_file_path() != base_path) && ResourceLoader::get_resource_type(base_path) == "PackedScene") {
						editable_info = TTR("This resource belongs to a scene that was instantiated or inherited.\nChanges to it must be made inside the original scene.");
					}
				}
			} else {
				if (FileAccess::exists(base_path + ".import")) {
					editable_info = TTR("This resource belongs to a scene that was imported, so it's not editable.\nPlease read the documentation relevant to importing scenes to better understand this workflow.");
				}
			}
		} else if (current_res->get_path().is_resource_file()) {