### Godot version

v4.0.beta11.official [91713ced8]

### System information

MX Linux 21

### Issue description

In Godot 3, TileMap had methods get_used_cells() and get_used_cells_by_id(). Godot 4's TileMap only has get_used_cells() and is missing get_used_cells_by_id().

get_used_cells_by_id() is highly useful in multiple cases, for example when trying to get all cells that are of road type, to randomly spawn a car.

Re-implementing get_used_cells_by_id() should be simple. The method could simply call get_used_cells(), and ignore all cells that are of the wrong ID.

### Steps to reproduce

N/A

### Minimal reproduction project

N/A
}
		if (tile_data->get_flip_h()) {
			dest_rect.size.x = -dest_rect.size.x;
		}
		if (tile_data->get_flip_v()) {
			dest_rect.size.y = -dest_rect.size.y;
		}
		
		if (p_frame >= 0) {
			Rect2i source_rect = atlas_source->get_runtime_tile_texture_region(p_atlas_coords, p_frame);
			tex->draw_rect_region(p_canvas_item, dest_rect, source_rect, modulate, transpose, p_tile_set->is_uv_clipping());
		} else if (atlas_source->get_tile_animation_frames_count(p_atlas_coords) == 1) {
			Rect2i source_rect = atlas_source->get_runtime_tile_texture_region(p_atlas_coords, 0);
			tex->draw_rect_region(p_canvas_item, dest_rect, source_rect, modulate, transpose, p_tile_set->is_uv_clipping());
		} else {
			real_t speed = atlas_source->get_tile_animation_speed(p_atlas_coords);
			real_t animation_duration = atlas_source->get_tile_animation_total_duration(p_atlas_coords) / speed;
			real_t time = 0.0;
			for (int frame = 0; frame < atlas_source->get_tile_animation_frames_count(p_atlas_coords); frame++) {
				real_t frame_duration = atlas_source->get_tile_animation_frame_duration(p_atlas_coords, frame) / speed;
				RenderingServer::get_singleton()->canvas_item_add_animation_slice(p_canvas_item, animation_duration, time, time + frame_duration, 0.0);
				Rect2i source_rect = atlas_source->get_runtime_tile_texture_region(p_atlas_coords, frame);
				tex->draw_rect_region(p_canvas_item, dest_rect, source_rect, modulate, transpose, p_tile_set->is_uv_clipping());
				time += frame_duration;
			}
			RenderingServer::get_singleton()->canvas_item_add_animation_slice(p_canvas_item, 1.0, 0.0, 1.0, 0.0);
		}
	}
}
void TileMap::_physics_notification(int p_what) {