### 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
for (int i = 0; i < plugins_list.size(); i++) {
		plugins_list[i]->forward_3d_draw_over_viewport(p_overlay);
	}
}
void EditorPluginList::forward_3d_force_draw_over_viewport(Control *p_overlay) {
	for (int i = 0; i < plugins_list.size(); i++) {
		plugins_list[i]->forward_3d_force_draw_over_viewport(p_overlay);
	}
}
void EditorPluginList::add_plugin(EditorPlugin *p_plugin) {
	plugins_list.push_back(p_plugin);
}
void EditorPluginList::remove_plugin(EditorPlugin *p_plugin) {
	plugins_list.erase(p_plugin);
}
bool EditorPluginList::is_empty() {
	return plugins_list.is_empty();
}
void EditorPluginList::clear() {
	plugins_list.clear();
}
EditorPluginList::EditorPluginList() {
}
EditorPluginList::~EditorPluginList() {
}