Trying to install Vscode, that doesn't exist, throws the user around as if it did

[Nathan Teodosio]

The Vscode snap doesn't exist (not under this name). However, "snap install" won't tell you so, and it will instead encourage one to jump through multiple hoops until it surrenders that secret. :p

--->
% snap install vscode
error: snap "vscode" is not available on stable but is available to install on the following
       channels:

       candidate snap install --candidate vscode
       beta snap install --beta vscode
       edge snap install --edge vscode

       Please be mindful pre-release channels may include features not completely tested or
       implemented. Get more information with 'snap info vscode'.
% snap install --candidate vscode
error: snap "vscode" is not available on candidate but is available to install on the following
       channels:

       beta snap install --beta vscode
       edge snap install --edge vscode

       Get more information with 'snap info vscode'.
% snap install --beta vscode
error: snap "vscode" is not available on beta but is available to install on the
       following channels:

       edge snap install --edge vscode

       Get more information with 'snap info vscode'.
% snap install --edge vscode
error: snap "vscode" is not available on latest/edge but other tracks exist.

       Please be mindful that different tracks may include different features. Get
       more information with 'snap info vscode'.
% snap info vscode
error: no snap found for "vscode"
<---

I had already reported[1] this at the Snapcraft forum but I think it might be better at Launchpad.

[1]: https://forum.snapcraft.io/t/trying-to-install-vscode-throws-the-user-around/31864