Hasura auth webhook spankind of SERVER

The first call to the webhook, POST/authenticate, has a SpanKind of INTERNAL:

Since it is the first call in a service that appears to be a synchronous request-response flow, the SpanKind should be SERVER. (OTel docs for reference -- SpanKind)
https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/api.md#spankind

Request is, when Hasura emits spans for this particular call, can it have a SpanKind of SERVER please?

Start by locating the code that emits Hasura's auth webhook span for POST /authenticate and compare its current INTERNAL kind with the OpenTelemetry SpanKind reference linked in the issue. Done means this call emits a SERVER span and the behavior is covered by an appropriate test.

Written by the indexing model from the issue text.