You should have gotten an automatic extension notice with N-400 submission.
https://www.uscis.gov/newsroom/alerts/uscis-updates-policy-to-automatically-extend-green-cards-for-naturalization-applicants
Effective Dec. 12, 2022, U.S. Citizenship and Immigration Services (USCIS) is updating the USCIS Policy Manual to allow USCIS to automatically extend the validity of Permanent Resident Cards (commonly called Green Cards) for lawful permanent residents who have applied for naturalization.