This is the most straightforward fix I can think of for this situation. It's definitely a my bad for not thinking about the new CSS var --body-rgb and there needing to be two separate CSS vars. This PR drops the --bs-body-rgb for two separate ones (so it's a small breaking change), but keeps the .bg-body and .text-body intact without change. it also required duplicating the utilities maps a bit—so we can differentiate at the Sass map level between bg and color. I think this is an acceptable solution, but definitely want to hear thoughts.
Fixes #34688 (closed).
/cc @ffoodd