function lookupHasTile(tileRepresentationLookup, tile) {
  return tileRepresentationLookup.tileIds.has(getUid(tile));
}
Check if a tile is already in the tile representation lookup.
@param {TileRepresentationLookup} tileRepresentationLookup Lookup of tile representations by zoom level.
@param {import("../../Tile.js").default} tile A tile.
@return {boolean} The tile is already in the lookup.