By Dave Sherwood and Matt Spetalnick HAVANA/WASHINGTON (Reuters) -Biden administration officials are considering inviting a Cuban representative to the U.S.-hosted Summit of the Americas, a person familiar with the matter said, as Washington scrambled to head off a potentially embarrassing boycott by some regional leaders. Discussion has focused on allowing a Cuban presence at the next month’s Los Angeles summit below the level of the country’s president or foreign minister, but it is at an early stage and no decision has been made, the source told Reuters on Friday. President Joe Biden’s aide…