This is by design, only BRaw is available for in camera recording. However you can record the HD 1080p output from the HDMI on the Mini Pro, if you do not need multiview display, but use the output for program. See bottom of pg 59 in the Pocket Camera Manual March 2020.
You can also convert the BRaw into ProRes in Resolve to get ProRes files. Compressed BRaw setting is going to be a smaller file than ProRes anyway, and you still have the audio embedded also.
Cheers