Did the U.S. Court of Appeals for the 9th Circuit err when it ruled that equitable exceptions apply to mandatory claim-processing rules, such as Federal Rule of Civil Procedure 23(f), which sets a 14-day deadline to file a petition for permission to appeal an order granting or denying class-action certification, and can excuse a party’s failure to file timely within the deadline established by Federal Rule of Civil Procedure 23(f), in conflict with the rulings of the U.S. Courts of Appeals for the 2nd, 3rd, 4th, 5th, 7th, 10th and 11th Circuits?