Enable vscode system http certificates

[spacey-sooty]

Resolves #395

[sciencewhiz]

I don't think we want to set it true, I think we want to delete it (since true is the default).

I have the lingering worry about breaking someone, but this should be ok because it only affects new installations as long as we don't break major vendordeps downloads. The SetIfNotAet wouldn't change existing installations.

to verify you should try downloading all the vendordeps we list in FRC docs. You'd have to do it either in a clean installation or manually change the flag in vs-code, instructions are in the CD thread

the commit message / PR title doesn't describe the change. This has nothing to do with build or macOS. Something like enable Vs Code system http certificates would be accurate.