President Joe Biden shrugged off the controversy over Donald Trump being on the 2024 ballot as a political action committee supporting the incumbent’s reelection announced plans for a record-shattering $250 million ad blitz. Flashing a grin, Biden told reporters Tuesday he wasn’t sweating Trump’s constitutional battle to be permitted on the presidential ballot in the fall election. “As far as I’m concerned, that’s fine,” Biden said as he left the White House for a fundraising trip to Florida. He was set to hold fundraisers in Miami and suburban Fort Lauderdale as he builds his already bulging …