WASHINGTON — It was Day One for the traditional courtesy calls to senators, but there’s not much about Merrick Garland’s Supreme Court nomination that has adhered to tradition — or courtesy. A day after his selection set the battle lines in a major fight over the court, President Barack Obama’s choice to replace the late Justice Antonin Scalia met only with Democratic leaders on Thursday — steering clear of the Republican leader who has vowed the Senate will ignore Garland’s nomination and wait for the next president to fill the seat. For Senate Majority Leader Mitch McConnell, the Capitol visit was a stunt “orchestrated” by the White House, his spokesman said.