mongocryptd should fail if query has $jsonSchema, but doesn't.

repro.js

/* 
 * start mongocryptd, then do:
 * mongo --port 27020 repro.js
 */
var schema = {
  properties: {
    ssn: {
      encrypt: {
        keyId: [
            BinData(4, "AAAAAAAAAAAAAAAAAAAAAA==")
        ],
        bsonType: "string",
        algorithm: "AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic",
        initializationVector: BinData(0, "aWlpaWlpaWlpaWlpaWlpaQ==")
      }
    }
  },
  bsonType: "object"
};

var cmd = {
    find: "coll",
    /* specifying $jsonSchema in filter should error. */
    filter: { $jsonSchema: { properties: {} } },
    jsonSchema: schema
};

printjson(db.runCommand(cmd))

/* prints:
{
	"hasEncryptionPlaceholders" : false,
	"schemaRequiresEncryption" : true,
	"result" : {
		"find" : "coll",
		"filter" : {
			"$and" : [
				{

				}
			]
		},
		"$db" : "test"
	},
	"ok" : 1
}
*/