### Godot version

v4.1.1.stable.official [bd6af8e0e]

### System information

Godot v4.1.1.stable - Debian GNU/Linux trixie/sid trixie - Vulkan (Compatibility) - Mesa Intel(R) HD Graphics 520 (SKL GT2) () - Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz (4 Threads)

### Issue description

After right clicking in thet "Filter Nodes" menu in the scene tree dock, the sub-menu is populated with a "Search" icon.

If I later switch themes in the same session, this icon is never updated to match the new theme.

![image](https://github.com/godotengine/godot/assets/660911/14336bb3-12ca-48c8-b030-8ada6ac27ec6)


### Steps to reproduce

1. Right click in the "Filter Nodes" menu in scene tree dock
2. Switch themes
3. Right click again in the "Filter Nodes" menu

Expected result: Icon has updated to match the theme I am currently using
Actual result: Icon is still using the theme I launched Godot with

### Minimal reproduction project

N/A
HashSet<int> &ran = r_rem_anims->find(anim)->value;
						for (int i = 0; i < anim->get_track_count(); i++) {
							ran.insert(i);
						}
					}
					HashSet<int> &ran = r_rem_anims->find(anim)->value;
					if (anim.is_null()) {
						continue;
					}
					for (int i = 0; i < anim->get_track_count(); i++) {
						NodePath track_np = anim->track_get_path(i);
						Node *n = root->get_node_or_null(track_np);
						if (!n) {
							continue;
						}
						if (!ran.has(i)) {
							continue; 
						}
						HashMap<Node *, NodePath>::Iterator found_path = p_renames->find(n);
						EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
						if (found_path) {
							if (found_path->value.is_empty()) {
								
								int idx = 0;
								HashSet<int>::Iterator EI = ran.begin();
								ERR_FAIL_COND(!EI); 
								while (*EI != i) {
									idx++;
									++EI;
									ERR_FAIL_COND(!EI);