For all those who were not able to get this done using the two solutions provided in this thread, I will post what worked for me.
I had to create two registry entries, they are per-user, not machine-wide. Using notepad or notepad++, create a file containing this text:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}]
@=""
[HKEY_CURRENT_USER\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}\InprocServer32]
@=""
and save as a .reg file. It won't work if you save as .txt. then just run the registry edit by double clicking the file, and restart the explorer.exe process (it may be called "windows explorer" in windows 11 , i can't recall), or restart your computer, and the old context menu should be there.
you can manually enter those keys, if you prefer. I got the registry edit file from someone else, so the above instructions are exactly what i did, and it worked for me.