### Godot version

v4.2.beta.custom_build [a574c0296]

### System information

linux

### Issue description

Folder colors don't show up in file dialogs: when saving a scene, etc.

### Steps to reproduce

1. color a folder
2. create and open the save scene dialog and navigate to the colored folder
3. notice it's not shown its color in the file dialog

### Minimal reproduction project

any
if (display_mode == DISPLAY_LIST || p_preview.is_null()) {
		return;
	}
	for (int i = 0; i < item_list->get_item_count(); i++) {
		Dictionary d = item_list->get_item_metadata(i);
		String pname = d["path"];
		if (pname == p_path) {
			item_list->set_item_icon(i, p_preview);
			item_list->set_item_tag_icon(i, Ref<Texture2D>());
		}
	}
}
void EditorFileDialog::_thumbnail_done(const String &p_path, const Ref<Texture2D> &p_preview, const Ref<Texture2D> &p_small_preview, const Variant &p_udata) {