`.raw` projection is not working correctly

### Is there an existing issue for this?

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### Code Sandbox link

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### Bug report

Hello, thank you for this amazing lib. V1 is fab!

I've got a schema where I am trying to work out a distance so I am using `raw(...)` so that I can use the `geo::distance` function. My query is returning an error:

```
const itemsQuery = q.star
.filterByType("item")
.project(() => ({
location: true,
distance: q.raw(
"coalesce(geo::distance(location, geo::latLng(1.234, -1.234)), 0)",
q.number(),
),
}));
```

The error is:
`result.distance: Required`

I have wrapped it in a coalesce to see if that fixed it as not all `location` values are set, so want to default to `0` where that is the case, but that still has an error.

When I log out the actual query and paste it into the vision plugin it works perfectly, and all results have a numerical value.

```
*[_type == "item"] { location, "distance": coalesce(geo::distance(location, geo::latLng(1.234, -1.234)), 0) }
```

The generated type when viewed in my IDE is:

```
GroqBuilder<{ location: Geopoint | null; distance: number }[], SchemaConfig>
```

As a related issue. When I have a raw field I can't then chain an `order` of any field to the query and get the error:

```
Error: You cannot chain a new query once you've specified a parser, since this changes the result type.
```

Thank you for your help :)