New Issue: Implementation improvement: when converting attributes to the production compiler, reduce the string conversion process

27293, "lydia-duncan", "Implementation improvement: when converting attributes to the production compiler, reduce the string conversion process", "2025-05-28T16:07:32Z"

Today, attachSymbolAttributes in compiler/passes/convert-help.cpp will take UniqueStrings from the dyno parser, call astr on them (which converts them to char *), and then store the result in what is frequently a std::string. This seems like an unnecessary amount of conversions and in working on #27267 I attempted to just store UniqueString itself but ultimately ended up backing away from it due to time constraints. It would be good to return to improving that