[CX] Incorrect Error message for REGEXP_REPLACE and REPLACE

Query issued:

 select name, REGEXP_REPLACE(email, 'e', 'a', 2) as mail from default_shadow;

Error message:

	"requestID": "ace5406e-1726-470b-9499-9ca013ce3baa",

	"signature": "*",

	"errors": [{ 

	"code": "1",

	"msg": "The input type for input argument 3(AInt64) is not expected."

	}],

	"status": "fatal",

	"metrics": {

		"elapsedTime": "6.653293ms",

		"executionTime": "6.129812ms",

		"resultCount": "0",

		"resultSize": "0"

Above query works well for n1ql