### 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->set_disabled(p_new_text.strip_edges().is_empty());
}
struct _GroupInfoComparator {
	bool operator()(const Node::GroupInfo &p_a, const Node::GroupInfo &p_b) const {
		return p_a.name.operator String() < p_b.name.operator String();
	}
};
void GroupsEditor::update_tree() {