### Tested versions

- Reproducible in: v4.2.stable.arch_linux
- Not Reproducible in: v4.1.3.stable.official [f06b6836a]

### System information

Garuda Linux (2.6.19-2)

### Issue description

A minor issue where UI Icons are not rendering on the Group Editor window, attaching a screenshot for reference:
![Screenshot_604](https://github.com/godotengine/godot/assets/22623256/c366164a-3d9a-4dcf-97a0-199b5a5a7ecc)

The icons were expected for Buttons like Add, Remove, Filter, etc.

### Steps to reproduce

Select any Node and go to the `Node` panel, click `Manage Groups` and the window will open.

### Minimal reproduction project (MRP)

Minor issue, easily reproducible following the above steps.
TreeItem *selected = nodes_to_remove->get_next_selected(nullptr);
	if (!selected) {
		return;
	}
	EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
	undo_redo->create_action(TTR("Remove from Group"));
	while (selected) {
		Node *node = scene_tree->get_edited_scene_root()->get_node(selected->get_metadata(0));
		undo_redo->add_do_method(node, "remove_from_group", selected_group);
		undo_redo->add_undo_method(node, "add_to_group", selected_group, true);
		selected = nodes_to_add->get_next_selected(selected);
	}
	undo_redo->add_do_method(this, "_group_selected");
	undo_redo->add_undo_method(this, "_group_selected");
	undo_redo->add_do_method(this, "emit_signal", "group_edited");
	undo_redo->add_undo_method(this, "emit_signal", "group_edited");
	
	undo_redo->add_do_method(SceneTreeDock::get_singleton()->get_tree_editor(), "update_tree");
	undo_redo->add_undo_method(SceneTreeDock::get_singleton()->get_tree_editor(), "update_tree");
	undo_redo->commit_action();
}
void GroupDialog::_remove_filter_changed(const String &p_filter) {