### Godot version

4.1.stable

### System information

Windows 11 (x64), Intel(R) Core(TM) i5-9400 CPU, Vulkan,  NVIDIA GeForce GTX 1660 Ti driver version 528.24

### Issue description

Every time you right click the Filter Nodes field, it duplicates the 'Filters' section in the dropdown.

https://github.com/godotengine/godot/assets/104696964/b8d867c9-ba31-47c5-91c8-23cfa02f1c89



### Steps to reproduce

Rightclick the Filter Nodes field.

### Minimal reproduction project

N/A
button_custom->set_text(TTR("Other Node"));
			button_custom->set_icon(get_theme_icon(SNAME("Add"), SNAME("EditorIcons")));
			button_custom->connect("pressed", callable_mp(this, &SceneTreeDock::_tool_selected).bind(TOOL_NEW, false));
			button_clipboard = memnew(Button);
			node_shortcuts->add_child(button_clipboard);
			button_clipboard->set_text(TTR("Paste From Clipboard"));
			button_clipboard->set_icon(get_theme_icon(SNAME("ActionPaste"), SNAME("EditorIcons")));
			button_clipboard->connect("pressed", callable_mp(this, &SceneTreeDock::_tool_selected).bind(TOOL_PASTE, false));
			_update_create_root_dialog();
		} break;
		case NOTIFICATION_ENTER_TREE: {
			clear_inherit_confirm->connect("confirmed", callable_mp(this, &SceneTreeDock::_tool_selected).bind(TOOL_SCENE_CLEAR_INHERITANCE_CONFIRM, false));
			scene_tree->set_auto_expand_selected(EDITOR_GET("docks/scene_tree/auto_expand_to_selected"), false);
		} break;
		case NOTIFICATION_EXIT_TREE: {
			clear_inherit_confirm->disconnect("confirmed", callable_mp(this, &SceneTreeDock::_tool_selected));
		} break;
		case EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED: {
			scene_tree->set_auto_expand_selected(EDITOR_GET("docks/scene_tree/auto_expand_to_selected"), false);
		} break;
		case NOTIFICATION_THEME_CHANGED: {
			button_add->set_icon(get_theme_icon(SNAME("Add"), SNAME("EditorIcons")));
			button_instance->set_icon(get_theme_icon(SNAME("Instance"), SNAME("EditorIcons")));
			button_create_script->set_icon(get_theme_icon(SNAME("ScriptCreate"), SNAME("EditorIcons")));
			button_detach_script->set_icon(get_theme_icon(SNAME("ScriptRemove"), SNAME("EditorIcons")));
			button_tree_menu->set_icon(get_theme_icon(SNAME("GuiTabMenuHl"), SNAME("EditorIcons")));
			filter->set_right_icon(get_theme_icon(SNAME("Search"), SNAME("EditorIcons")));
			
			if (button_2d) {
				button_2d->set_icon(get_theme_icon(SNAME("Node2D"), SNAME("EditorIcons")));