Qualifying Surviving Spouse?

75 yo mom & 80 yo dad supporting 43 yo adult son (he is claimed as a dependent under qualifying relative on 1040SR).

In 2023 dad dies, mom files MFJ for 2023.

In 2024 Turbo Tax is selecting QSS, but I am  wondering if its right because it reads that the dependent is a child. Can you file QSS if the dependent is an adult (not disabled, just doesn't want to work, so fully financially supported by and living with mom )?

Thanks!