### 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.
for (int i = 0; i < editor_data.get_edited_scene_count(); i++) {
		Node *node = editor_data.get_edited_scene_root(i);
		if (!node) {
			continue;
		}
		String path = node->get_scene_file_path();
		if (!path.is_empty() && !FileAccess::exists(path)) {
			
			EditorUndoRedoManager::get_singleton()->set_history_as_unsaved(editor_data.get_scene_history_id(i));
		}
	}
	_update_title();
	_update_scene_tabs();
}
void EditorNode::_dialog_action(String p_file) {