That sounds like your employer just continued to pay you rather than going through the Calif EDD for "paid family leave" payments. If that's what happened then PFL paid by the employer is not excludable - it must be paid from the Calif SDI program or the employer's voluntary plan (VPDI) to be excluded from Calif income.
So, there's nothing for you to do - continue with your return normally as if you didn't have maternity leave.