### 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.
add_group_button->set_disabled(p_new_text.strip_edges().is_empty());
}
void GroupDialog::_group_renamed() {
	TreeItem *renamed_group = groups->get_selected();
	if (!renamed_group) {
		return;
	}
	const String name = renamed_group->get_text(0).strip_edges();
	if (name == selected_group) {
		return;
	}
	if (name.is_empty()) {
		renamed_group->set_text(0, selected_group);
		error->set_text(TTR("Invalid group name."));
		error->popup_centered();
		return;
	}
	for (TreeItem *E = groups_root->get_first_child(); E; E = E->get_next()) {
		if (E != renamed_group && E->get_text(0) == name) {
			renamed_group->set_text(0, selected_group);
			error->set_text(TTR("Group name already exists."));
			error->popup_centered();
			return;
		}