Go-to-definition does not work on `/// <reference lib="..." />` directives

@DanielRosenwasser arbeitet bereits daran.

Seit 28.8.2026.

• #64088 von @copilot-swe-agent — offen

```
///
```

In TypeScript 6, go to definition works on any position in the string and jumps you to the appropriate `lib.es2025.d.ts`.

In TypeScript 7, this no longer works.

I assume we have a test that was disabled at some point. If that exists, we should bring it back.