Chris Willman Senior Music Writer and Chief Music Critic In a move certain to shock Los Angeles theatergoers, the Center Theatre Group (CTG) announced Thursday that it is canceling plans for a 2023-34 season at the Mark Taper Forum, one of the most important homes for new plays in the city, if not the country, due to severe financial concerns. The organization’s two other theaters, the Ahmanson and Kirk Douglas Theatres, will continue with their seasons as usual, with 2023-24 programs to be announced shortly, the announcement said. The programming suspension at the 736-seat Mark Taper will begin after a current world premiere musical, “Transparent,” wraps up its run on June 25. Two other shows that had already been announced will have their runs canceled or postponed. The world premiere of “Fake It Until You Make It,” set to begin Aug. 2, is being called off, although the org said “we plan to feature it) in a future season.” Meanwhile, a touring production of “Cambodian Rock Band” set for the Mark Taper has been canceled outright.