When will my grace period end, and what options do I have to avoid unlawful presence?

The question

My cap exempt H1b- i94 expired on 07/10/2025. My new employer filed a change of employer on 06/29/2025. I have received a NOID due to lack of wet signature. So, I am expecting a denial notice on 08/11/2025. My employer is intending to re-file H1b this time with wet(handwritten) signature. But I fear my grace period will end on the day of denial and I shall start accruing unlawful presence.