Follow-up to #24955 (`refactor: move chat error kinds into codersdk`),
which moved `ChatErrorKind` into `codersdk` but did not refresh the
generated apidoc artifacts. As a result, `make gen` was producing a
dirty tree on `main`.
This PR is the output of running `make gen -B` on a clean checkout of
`main`. Only generated files are touched:
- `coderd/apidoc/docs.go`
- `coderd/apidoc/swagger.json`
- `docs/reference/api/chats.md`
- `docs/reference/api/schemas.md`
The diff adds the `codersdk.ChatErrorKind` schema and replaces the
previously-untyped `kind: string` fields on `codersdk.ChatError` and
`codersdk.ChatRetryEvent` with references to the new enum.