glint-expect-error/ignore directive handling needs to be applied to run-tsc as well

[machty]

We fixed a number of issues blocking glint-expect-error in #795, but our "hook point" is specific to the Language Server, and not TSC, meaning if you run glint executable for type-checking purposes, the glint-expect-error directives won't kick in and you'll get errors for guarded lines.

Currently investigating how to accomplish this, but it seems solving this properly will also solve it for TS Plugin mode, which I think is also disconnected from the Language Server support we have right now.