### 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 (p_editing_owner) {
		const ObjectID id = p_editing_owner->get_instance_id();
		for (EditorPlugin *plugin : active_plugins[id]) {
			_plugin_over_edit(plugin, nullptr);
		}
		active_plugins.erase(id);
	} else {
		
		
		List<ObjectID> to_remove;
		for (KeyValue<ObjectID, HashSet<EditorPlugin *>> &kv : active_plugins) {
			if (!ObjectDB::get_instance(kv.key)) {
				to_remove.push_back(kv.key);
				for (EditorPlugin *plugin : kv.value) {
					_plugin_over_edit(plugin, nullptr);
				}
			}
		}
		for (const ObjectID &id : to_remove) {
			active_plugins.erase(id);
		}
	}
}
static bool overrides_external_editor(Object *p_object) {