RecordPair TyConName ValConName does not serialize nicely in the OpenAPI API

[dhess]

In #1241, we would like to return an error with a RecordPair TyConName ValConName when the interpreter encounters an unknown ValConName, corresponding to this InterpError:

primer/primer/src/Primer/EvalFullInterp.hs

Line 115 in ba231d0

| UnknownValCon TyConName ValConName

However, RecordPair TyConName ValConName doesn't serialize nicely in the OpenAPI API, producing this illegal name:

            "RecordPair_(GlobalName_'ATyCon)_(GlobalName_'AValCon)": {
                "properties": {
                    "fst": {
                        "$ref": "#/components/schemas/GlobalName"
                    },
                    "snd": {
                        "$ref": "#/components/schemas/GlobalName"
                    }
                },
                "required": [
                    "fst",
                    "snd"
                ],
                "type": "object"
            },