WASHINGTON, D.C. — Ghosts and goblins can scratch the White House from their trick or treating routes this year. President Joe Biden and first lady Jill Biden will be in Europe on Halloween and won't be at the White House to help hand out candy and other treats. Instead, the Pennsylvania Avenue side of the White House will be lit up in orange light to celebrate the spooky holiday, said the first lady's spokesperson, Michael LaRosa. It's the Bidens' first Halloween at the White House. “The president and first lady will be traveling internationally during the last days of October,…