ST. PETERSBURG, Fla. — U.S. District Judge Aileen Cannon is facing sharp criticism following her decision this week to grant a request by former President Donald Trump’s legal team for an independent arbiter to review documents obtained during an FBI search of his Florida property last month.Cannon, of the Southern District of Florida, on Monday authorized an outside legal expert to review the records taken during the Aug. 8 search of Mar-a-Lago as part of a probe into Trump’s inappropriate retention of …