The issue is that, while LrC is full screen and the LrC menu bar is correctly located next to the notch, if I press the letter "L" on my keyboard (which is supposed to simply "dim" the lights by making the LrC panels and background dim), then something happens to the entire UI.
I can only assume that it is a bug, becuase the second I press "L" then the LrC window changes sizes and the LrC menu bar relocates itself to be below notch instead of beside it.