### 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.
}
		InspectorDock::get_inspector_singleton()->edit(current_obj);
		NodeDock::get_singleton()->set_node(nullptr);
		SceneTreeDock::get_singleton()->set_selected(selected_node);
		InspectorDock::get_singleton()->update(nullptr);
	}
	if (current_obj == prev_inspected_object) {
		
		InspectorDock::get_inspector_singleton()->update_tree();
	}
	InspectorDock::get_singleton()->set_info(
			info_is_warning ? TTR("Changes may be lost!") : TTR("This object is read-only."),
			editable_info,
			info_is_warning);
	if (InspectorDock::get_inspector_singleton()->is_using_folding() == disable_folding) {
		InspectorDock::get_inspector_singleton()->set_use_folding(!disable_folding);
	}
	Object *editor_owner = is_node ? (Object *)SceneTreeDock::get_singleton() : is_resource ? (Object *)InspectorDock::get_inspector_singleton()
																							: (Object *)this;
	
	if (!inspector_only) {
		EditorPlugin *main_plugin = editor_data.get_editor(current_obj);
		int plugin_index = 0;
		for (; plugin_index < editor_table.size(); plugin_index++) {
			if (editor_table[plugin_index] == main_plugin) {
				if (!main_editor_buttons[plugin_index]->is_visible()) {
					main_plugin = nullptr; 
				}
				break;
			}