You've had the car for less than a week, so the 2021.12.4.9 version you have might be "too new" in that Tesla often has from-factory versions that have special code that isn't ready to merge with the main release. In the past, the factory versions have "odd" week numbers, e.g., 2021.3.*, and they have newer code in some aspects than what their version might indicate, e.g., 2021.3.106.5 was first noticed August 12th while 2021.24 was first noticed August 3rd.
So far it seems like most of the Plaid/LR vehicles updating to 2021.24.3 are going from 2021.12.25.5, but that doesn't mean your vehicle will need to go through that version first.