Fails to enable VREF on STM32G0

[drbartling]

I'm unable to turn on VREF using embassy on an STM32G0 part. I've included an example project for reference that builds and demonstrates the issue. I'm not sure what I'm doing wrong in this case, since looking through the stack, it seems that the procedure very closely resembles the C example.

References:
https://github.com/drbartling/vref-question

I would expect that if there are caps on the output of vref+, that I would be able to measure ~2.5V on the pin, and I should get a credible result from a vref measurement.