### 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.
if (!tree->is_anything_selected()) {
		return;
	}
	selected_group = tree->get_selected()->get_text(0);
}
void GroupsEditor::_group_renamed() {
	if (!node || !can_edit(node, selected_group)) {
		return;
	}
	TreeItem *ti = tree->get_selected();
	if (!ti) {
		return;
	}
	const String name = ti->get_text(0).strip_edges();
	if (name == selected_group) {
		return;
	}
	if (name.is_empty()) {