Enum Values Field not Validated Correctly in GraphQL Documents

[ThisaruGuruge]

Description:
The following query is now validated as a valid query:

{
    __schema {
        types {
            enumValues
        }
    }
}

But this should return an error since the selection enumValues must have subfields.

The result should be:

{
    "errors": [
        {
            "message":"Field \"enumValues\" of type \"[__EnumValue!]\" must have a selection of subfields. Did you mean \"enumValues { ... }\"?",
            "locations": [
                {
                    "line": 4,
                    "column": 17
                }
            ]
        }
    ]
}