### Godot version

4.0 Beta 10

### System information

Windows 10

### Issue description

when picking tiles from a gridmap and you have a search filter applied, it often doesn't do anything, instead I get an index out of bounds error in the console
`scene/gui/item_list.cpp:424 - Index p_current = 8 is out of bounds (items.size() = 4).`

### Steps to reproduce

1. Open a project using a gridmap like the platformer demo, or create one.
2. Search for specific tiles inside the tile selection.
3. Try to pick a tile inside the 3D viewport with that you want to paint (maybe you don't want to reset the filter and do a long search there)

In some cases it works, but mostly it doesn't work (depending on the tile you picked and what you searched for)
Also I am not sure, but I have the feeling that in a few cases it picks the wrong tile, instead of throwing an error

### Minimal reproduction project

Any project that uses a gridmap, for example the platformer demo from the demo projects repo
input_action = INPUT_NONE;
				return EditorPlugin::AFTER_GUI_INPUT_STOP;
			}
		}
	}
	Ref<InputEventMouseMotion> mm = p_event;
	if (mm.is_valid()) {
		
		update_grid();
		if (do_input_action(p_camera, mm->get_position(), false)) {
			return EditorPlugin::AFTER_GUI_INPUT_STOP;
		}
		return EditorPlugin::AFTER_GUI_INPUT_PASS;
	}
	Ref<InputEventKey> k = p_event;
	if (k.is_valid()) {
		if (k->is_pressed()) {
			if (k->get_keycode() == Key::ESCAPE) {
				if (input_action == INPUT_PASTE) {
					_clear_clipboard_data();
					input_action = INPUT_NONE;
					_update_paste_indicator();
					return EditorPlugin::AFTER_GUI_INPUT_STOP;
				} else if (selection.active) {
					_set_selection(false);
					return EditorPlugin::AFTER_GUI_INPUT_STOP;
				} else {
					selected_palette = -1;
					mesh_library_palette->deselect_all();
					update_palette();