### 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
Array rc = EditorSettings::get_singleton()->get_project_metadata("recent_files", "scenes", Array());
	recent_scenes->clear();
	String path;
	for (int i = 0; i < rc.size(); i++) {
		path = rc[i];
		recent_scenes->add_item(path.replace("res:", ""), i);
	}
	recent_scenes->add_separator();
	recent_scenes->add_shortcut(ED_SHORTCUT("editor/clear_recent", TTR("Clear Recent Scenes")));
	recent_scenes->reset_size();
}
void EditorNode::_quick_opened() {
	Vector<String> files = quick_open->get_selected_files();
	bool open_scene_dialog = quick_open->get_base_type() == "PackedScene";
	for (int i = 0; i < files.size(); i++) {
		String res_path = files[i];
		List<String> scene_extensions;
		ResourceLoader::get_recognized_extensions_for_type("PackedScene", &scene_extensions);
		if (open_scene_dialog || scene_extensions.find(files[i].get_extension().to_lower())) {
			open_request(res_path);
		} else {
			load_resource(res_path);
		}
	}
}
void EditorNode::_quick_run() {