2026 Sienna LE - No Backup/EV Noise

Did Toyota change or omit the backup/EV noise for the 2026 model year? From the first day we drove off the dealer lot, our Sienna has not made any of the normal "angelic" noise that I thought was mandatory by law. It's completely silent when driving slowly in a parking lot and when backing up.

Is this something I need to bring up to the dealer?