lsp: triple-slash no-lib reference can cause other libs to disappear

[kitsonk]

If a file is in scope of the editor that contains a:

/// <reference no-default-lib="true" />

And isn't a built in lib file, it appears to wipe out all the libs, even if they are supplied in a tsconfig.json file resulting in diagnostics like:

Cannot find name 'Deno'. deno-ts(2304)

[nayeemrmn]

We can't/shouldn't do anything about this and no reports recently of users hitting this.