### 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
GridMapEditor::~GridMapEditor() {
	ERR_FAIL_NULL(RenderingServer::get_singleton());
	_clear_clipboard_data();
	for (int i = 0; i < 3; i++) {
		if (grid[i].is_valid()) {
			RenderingServer::get_singleton()->free(grid[i]);
		}
		if (grid_instance[i].is_valid()) {
			RenderingServer::get_singleton()->free(grid_instance[i]);
		}
		if (cursor_instance.is_valid()) {
			RenderingServer::get_singleton()->free(cursor_instance);
		}
		if (selection_level_instance[i].is_valid()) {
			RenderingServer::get_singleton()->free(selection_level_instance[i]);
		}
		if (selection_level_mesh[i].is_valid()) {
			RenderingServer::get_singleton()->free(selection_level_mesh[i]);
		}
	}
	RenderingServer::get_singleton()->free(selection_mesh);
	if (selection_instance.is_valid()) {
		RenderingServer::get_singleton()->free(selection_instance);
	}
	RenderingServer::get_singleton()->free(paste_mesh);
	if (paste_instance.is_valid()) {
		RenderingServer::get_singleton()->free(paste_instance);
	}
}
void GridMapEditorPlugin::_notification(int p_what) {