### Tested versions

Caused by [0d6300d269b818e6c3d3ea9cbc592480103aa6d0] Fix folder color not showing up in file dialogs
https://github.com/godotengine/godot/pull/84837
(git bisection)

### System information

Godot v4.3.dev (6faa5c6dc) - Fedora Linux 39 (Workstation Edition) - Wayland - Vulkan (Forward+) - dedicated AMD Radeon RX Vega (RADV VEGA10) () - AMD Ryzen 7 5800X 8-Core Processor (16 Threads)

### Issue description

When opening the export path, it results in a black popup.

![image](https://github.com/godotengine/godot/assets/270928/d67dee6a-f1e1-4bf3-8a3f-419554269f4a)


### Steps to reproduce

1. Open export settings
2. Add an export target
3. Try to select an export path

### Minimal reproduction project (MRP)

n/a
return;
		}
		
		if (!valid) {
			int idx = filter->get_selected();
			String flt = filters[idx].get_slice(";", 0);
			String ext = flt.get_slice(",", 0).strip_edges().get_extension();
			f += "." + ext;
		}
		if (file_name.begins_with(".")) { 
			error_dialog->set_text(TTR("Cannot save file with a name starting with a dot."));
			error_dialog->popup_centered(Size2(250, 80) * EDSCALE);
			return;
		}
		if (dir_access->file_exists(f) && !disable_overwrite_warning) {
			confirm_save->set_text(vformat(TTR("File \"%s\" already exists.\nDo you want to overwrite it?"), f));
			confirm_save->popup_centered(Size2(250, 80) * EDSCALE);
		} else {
			_save_to_recent();
			hide();
			emit_signal(SNAME("file_selected"), f);
		}
	}
}
void EditorFileDialog::_cancel_pressed() {
	file->set_text("");
	invalidate();
	hide();
}
void EditorFileDialog::_item_selected(int p_item) {