So my 955 Solar updated automatically today to the newest update (22.24), and after that, the built-in HR monitor immediately stopped working. I noticed this later when going for a run, and I tried the trick mentioned here by re-installing the update. This worked to the extent that the HR monitor now turns on, but when I went for a run, I noticed that my displayed HR was about 30 bpm lower than usual, so clearly, something is not right with the new software. Hope this can be fixed promptly!
