SAN FRANCISCO — Patrick Bailey was back behind the plate Wednesday , but making his first start in four games, it’s clear there’s nothing status quo about the Giants’ catching situation. “It’s not a rule to have an everyday catcher,” manager Tony Vitello said. And for the first time in some time, it appears the Giants do not. Giants catcher Patrick Bailey (right) apparently is being platooned at the position after slumping at the plate. AP Since being called up in May 2023, Bailey has appeared in 381 of a possible 478 games. Only four other catchers in the majors have logged more innings in the squat.  He’s been held out of the lineup lately in favor of newly called-up Jesus Rodriguez and backup Eric Haase as the Giants search for an offensive spark. Before Rule 5 pick Andrew Susac landed on the injured list, Bailey had begun to cede playing time to him, too. The three share something in common: They’re all bringing more to the table offensively than Bailey at the moment for a club starved of runs.…