Resetting the experimental instance of Visual Studio has changed in 2026 (v18)

Updated Jan 7th 2026 -- see below If you build extensions for Visual Studio, you'll know that sometimes (frequently?--depending on what you're doing) it's necessary to completely reset the experimental instance to get it back to a known/good state. With previous versions, it was possible to start typing in the main Windows menu and it would find the command to do this for you. This was possible…