fix(csharp): align driver and manifest loading errors with c++ - #4973

fix(csharp): align driver and manifest loading errors with c++#4973

CurtHagenlocher merged 2 commits into

apache:mainapache/arrow-adbc:mainfrom

amoeba:csharp-driver-not-found-testsamoeba/arrow-adbc:csharp-driver-not-found-testsCopy head branch name to clipboard