[Bug]: [http-client-js] Enum value type is resolved as `<Unresolved Symbol>`

### Describe the bug

For `WidgetKind.Heavy` type we can't resolve it correctly so we would get the `` in generated code. We should support that also.

```
enum WidgetKind {
Heavy: "heavy",
Light: "light",
}

model HeavyWidget {
kind: WidgetKind.Heavy;
}

```

### Reproduction

NA

### Checklist

- [x] Follow our [Code of Conduct](https://github.com/microsoft/typespec/blob/main/CODE_OF_CONDUCT.md)
- [x] Check that there isn't already an issue that request the same bug to avoid creating a duplicate.
- [x] Check that this is a concrete bug. For Q&A open a [GitHub Discussion](https://github.com/Microsoft/typespec/discussions).
- [x] The provided reproduction is a [minimal reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) of the bug.