Had same issue on setting up VS2022 for v4.50.1 for local dev in IIS.
Added the nuget package to the solution for the missing dll, unable to get it to copy in to the bin directory via build process. Located the dll in the C:\Users\"YourUser"\.nuget folder and copied it directly to the Nop.Web bin\debug\net6.0 folder.
Solved the issue, I agree it seems to be an issue with running the solution via IIS from VS locally.
Anyone else have a more automated way please share.
I tried the other offered methods above and no success.