Sorry for the delay - I’ve been out of state and then trying to catch up on a few weeks worth of things - including requirement updates to build Marlin.
I’ve taken a quick look, and it does look like for whatever reason that option wasn’t enabled.
I’ve enabled it across the board - which should enable M73 etc again as of the latest builds - which are running again now after fixing the builders.
Give it a whirl with something datestamped 20220521 or later and see how you go…