sql/parser: Improve TestTypeCheckSameTypedExprs by asserting params
sql/parser: Improve TestTypeCheckSameTypedExprs by asserting params

Previously, TestTypeCheckSameTypedExprs did not assert the parameters
set to the provided MapArgs. This change adds in this verification to
the test.

sunya123/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,arjun4084346/cockroach,sunya123/cockroach,petermattis/cockroach,arjun4084346/cockroach,vivekmenezes/cockroach,petermattis/cockroach,glycerine/cockroach,maxlang/cockroach,veteranlu/cockroach,glycerine/cockroach,arjun4084346/cockroach,arjun4084346/cockroach,paperstreet/cockroach,veteranlu/cockroach,paperstreet/cockroach,vivekmenezes/cockroach,vaibhavarora/cockroach,sunya123/cockroach,paperstreet/cockroach,glycerine/cockroach,paperstreet/cockroach,sunya123/cockroach,vaibhavarora/cockroach,sunya123/cockroach,maxlang/cockroach,arjun4084346/cockroach,paperstreet/cockroach,glycerine/cockroach,vivekmenezes/cockroach,sunya123/cockroach,vaibhavarora/cockroach,cockroachdb/cockroach,glycerine/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,veteranlu/cockroach,sunya123/cockroach,maxlang/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,arjun4084346/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,vaibhavarora/cockroach,petermattis/cockroach,maxlang/cockroach,veteranlu/cockroach,petermattis/cockroach,veteranlu/cockroach,cockroachdb/cockroach,glycerine/cockroach,paperstreet/cockroach,sunya123/cockroach,petermattis/cockroach,petermattis/cockroach,maxlang/cockroach,veteranlu/cockroach,maxlang/cockroach,vivekmenezes/cockroach,arjun4084346/cockroach,cockroachdb/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,petermattis/cockroach,paperstreet/cockroach,maxlang/cockroach,maxlang/cockroach,arjun4084346/cockroach,cockroachdb/cockroach,vaibhavarora/cockroach,glycerine/cockroach,petermattis/cockroach,veteranlu/cockroach,glycerine/cockroach,cockroachdb/cockroach