### 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 (err != OK) {
		show_accept(TTR("Couldn't save scene. Likely dependencies (instances or inheritance) couldn't be satisfied."), TTR("OK"));
		return;
	}
	int flg = 0;
	if (EDITOR_GET("filesystem/on_save/compress_binary_resources")) {
		flg |= ResourceSaver::FLAG_COMPRESS;
	}
	flg |= ResourceSaver::FLAG_REPLACE_SUBRESOURCE_PATHS;
	err = ResourceSaver::save(sdata, p_file, flg);
	
	emit_signal(SNAME("scene_saved"), p_file);
	_save_external_resources();
	editor_data.save_editor_external_data();
	for (Ref<AnimatedValuesBackup> &E : anim_backups) {
		E->restore();
	}
	if (err == OK) {
		scene->set_scene_file_path(ProjectSettings::get_singleton()->localize_path(p_file));
		editor_data.set_scene_as_saved(idx);
		editor_data.set_scene_modified_time(idx, FileAccess::get_modified_time(p_file));
		editor_folding.save_scene_folding(scene, p_file);
		_update_title();
		_update_scene_tabs();
	} else {
		_dialog_display_save_error(p_file, err);
	}
	scene->propagate_notification(NOTIFICATION_EDITOR_POST_SAVE);
}
void EditorNode::save_all_scenes() {