### Godot version

4.1.dev (dc625bcbfc5b587ba8867481ee7a1f6a567c25d0)

### System information

Mageia 9, Linux

### Issue description

When importing a project in current `master`, the following error is raised for each asset that gets imported:
```
Attempting to parent and popup a dialog that already has a parent.
```

It seems to be raised once per asset, caused by the progress dialog.

CC @bruvzg

### Steps to reproduce

- Import a new project in Godot that contains importable assets, e.g. https://github.com/RPicster/godot4-demo-desert-light

### Minimal reproduction project

See above.
}
				}
			}
			if (embedded) {
				
				if (embedder) {
					embedder->_sub_window_register(this);
					RS::get_singleton()->viewport_set_update_mode(get_viewport_rid(), RS::VIEWPORT_UPDATE_WHEN_PARENT_VISIBLE);
					_update_window_size();
				}
			} else {
				if (!get_parent()) {
					
					visible = true; 
					window_id = DisplayServer::MAIN_WINDOW_ID;
					DisplayServer::get_singleton()->window_attach_instance_id(get_instance_id(), window_id);
					_update_from_window();
					
					{
						position = DisplayServer::get_singleton()->window_get_position(window_id);
						size = DisplayServer::get_singleton()->window_get_size(window_id);
					}
					_update_window_size(); 
					_update_viewport_size(); 
					_update_window_callbacks();
					RS::get_singleton()->viewport_set_update_mode(get_viewport_rid(), RS::VIEWPORT_UPDATE_WHEN_VISIBLE);
				} else {
					
					if (visible) {
						_make_window();