INNER JOIN renames all fields to t0_r0 ... t2_r12 to the json end result

If I use eager_load for 3 different objects `Person`,`Group`,`Organization` like this:

```
Person.eager_load(group: organization).where({ organizations: { name: 'XXX' } }).all_json
```

The end result will have all of it's fields renamed to t0_r0 ... t2_r12.

Reproduce the issue with Person.eager_load(group: organization).where({ organizations: { name: 'XXX' } }).all_json and inspect how eager loading and JSON serialization handle the joined records. Confirm that the serialized result exposes fields as t0_r0 through t2_r12, then determine the expected field names before making the output preserve them.

Written by the indexing model from the issue text.