This does not make any sense since Unreal use his own DotNet which is in folder, \Engine\Binaries\ThirdParty\DotNet\8.0.300
Only DotNet you need is 4.6.2 only when you are compiling with Visual Studio UI, and sometimes 4.8 if you retarget any of programs.
Like I say when you make an Installed Build , Unrealbuildtools use his own DotNet.