### 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.
switch (p_id) {
		case SETTINGS_LAYOUT_SAVE: {
			current_menu_option = p_id;
			layout_dialog->set_title(TTR("Save Layout"));
			layout_dialog->set_ok_button_text(TTR("Save"));
			layout_dialog->set_name_line_enabled(true);
			layout_dialog->popup_centered();
		} break;