### 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 ((int)Input::get_singleton()->get_mouse_button_mask() & 0x7) {
				log->add_message(TTR("Can't undo while mouse buttons are pressed."), EditorLog::MSG_TYPE_EDITOR);
			} else {
				EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
				String action = undo_redo->get_current_action_name();
				int id = undo_redo->get_current_action_history_id();
				if (!undo_redo->undo()) {
					log->add_message(TTR("Nothing to undo."), EditorLog::MSG_TYPE_EDITOR);
				} else if (!action.is_empty()) {
					switch (id) {
						case EditorUndoRedoManager::GLOBAL_HISTORY:
							log->add_message(vformat(TTR("Global Undo: %s"), action), EditorLog::MSG_TYPE_EDITOR);
							break;
						case EditorUndoRedoManager::REMOTE_HISTORY:
							log->add_message(vformat(TTR("Remote Undo: %s"), action), EditorLog::MSG_TYPE_EDITOR);
							break;
						default:
							log->add_message(vformat(TTR("Scene Undo: %s"), action), EditorLog::MSG_TYPE_EDITOR);
					}
				}
			}
		} break;
		case EDIT_REDO: {
			EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
			if ((int)Input::get_singleton()->get_mouse_button_mask() & 0x7) {
				log->add_message(TTR("Can't redo while mouse buttons are pressed."), EditorLog::MSG_TYPE_EDITOR);
			} else {
				if (!undo_redo->redo()) {
					log->add_message(TTR("Nothing to redo."), EditorLog::MSG_TYPE_EDITOR);
				} else {