feat: stabilize text imports (#34238)
This stabilizes `text` imports, so that:
```ts
import hello from "./hello.txt" with { type: "text" };
```
will not require the `--unstable-raw-imports` flag.
This is as the tc39 proposal is stage 3, and the html spec changes
required are already landed.
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Co-authored-by: crowlbot <280062030+crowlbot@users.noreply.github.com>
