API: Tier number not populated

[JonRay15]

Summary

We requested to add a tier number to all "program" APIs.

{
  "data": {
    "currentVolumeRebateProgram": {
      "id": "c173a4b09efb119ce757c1bf0ed168d440a3db7e1c012f31108191d41330043c",
      "version": 1,
      "benefitTiers": [
        {
          "minimumPartyMakerVolumeFraction": "0.001",
          "additionalMakerRebate": "0.00001",
          "tierNumber": null
        },
        {
          "minimumPartyMakerVolumeFraction": "0.01",
          "additionalMakerRebate": "0.0001",
          "tierNumber": null
        },
        {
          "minimumPartyMakerVolumeFraction": "0.05",
          "additionalMakerRebate": "0.0005",
          "tierNumber": null
        }
      ],
      "endOfProgramTimestamp": "2024-10-03T14:30:29Z",
      "windowLength": 1,
      "endedAt": null
    }
  }
}

As you can see above it is null.... per feedback it looks like this is a GQL only problem as it is there on the REST.

Expected behaviour

• When the program proposal is processed it the Core should sort the tiers into the correct order based on the relevant metric and then derive the tier number
• If a proposal is uploaded that attempts to manually set the tier number it should fail validation
• This should apply to volume discount programs, referral programs, and maker rebate programs

[JonRay15]

Checked on FG for all three of volume discount, referral program, and volume maker rebate and they all look good.