relation-tuples/check always requires a subject_set.relation

[hperl]

Preflight checklist

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Describe the bug

A request to relation-tuples/check requires the subject set relation to be set. It should just default to an empty string, so that we can, e.g., check Documet:secret#read@User:Bob without having to specify the subject set relation at all.

Reproducing the bug

curl -X GET --silent \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $ORY_PAT" \
  "$ORY_SDK_URL/relation-tuples/check?namespace=File&object=code&relation=view&subject_set.object=Bob&subject_set.namespace=File"|jq

{
  "error": {
    "code": 400,
    "status": "Bad Request",
    "request": "e6e69ca0-1043-9c73-a0e0-73729283136d",
    "message": "incomplete subject, provide \"subject_id\" or a complete \"subject_set.*\""
  }
}

Relevant log output

No response

Relevant configuration

No response

Version

master

On which operating system are you observing this issue?

Linux

In which environment are you deploying?

Ory Network

Additional Context

No response

[zepatrik]

Makes sense 👍 especially with #1092