sql/pgwire: fix usage of parameter type hints
sql/pgwire: fix usage of parameter type hints

Fixes the TestDockerJava breakage. Fixes #5382.

paperstreet/cockroach,arjun4084346/cockroach,nieyy/cockroach,vaibhavarora/cockroach,cockroachdb/cockroach,bg451/cockroach,arjun4084346/cockroach,paperstreet/cockroach,sunya123/cockroach,maxlang/cockroach,vivekmenezes/cockroach,vaibhavarora/cockroach,nieyy/cockroach,bg451/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,veteranlu/cockroach,paperstreet/cockroach,vivekmenezes/cockroach,arjun4084346/cockroach,vaibhavarora/cockroach,glycerine/cockroach,arjun4084346/cockroach,nieyy/cockroach,petermattis/cockroach,maxlang/cockroach,nieyy/cockroach,vivekmenezes/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,maxlang/cockroach,vivekmenezes/cockroach,nieyy/cockroach,petermattis/cockroach,maxlang/cockroach,petermattis/cockroach,vivekmenezes/cockroach,petermattis/cockroach,nieyy/cockroach,paperstreet/cockroach,sunya123/cockroach,sunya123/cockroach,glycerine/cockroach,arjun4084346/cockroach,bg451/cockroach,paperstreet/cockroach,arjun4084346/cockroach,paperstreet/cockroach,sunya123/cockroach,nieyy/cockroach,cockroachdb/cockroach,bg451/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,cockroachdb/cockroach,bg451/cockroach,petermattis/cockroach,glycerine/cockroach,veteranlu/cockroach,petermattis/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,arjun4084346/cockroach,glycerine/cockroach,nieyy/cockroach,glycerine/cockroach,sunya123/cockroach,paperstreet/cockroach,petermattis/cockroach,sunya123/cockroach,vaibhavarora/cockroach,glycerine/cockroach,vivekmenezes/cockroach,bg451/cockroach,maxlang/cockroach,bg451/cockroach,arjun4084346/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,maxlang/cockroach,glycerine/cockroach,vivekmenezes/cockroach,petermattis/cockroach,sunya123/cockroach,veteranlu/cockroach,maxlang/cockroach,veteranlu/cockroach,sunya123/cockroach,maxlang/cockroach,glycerine/cockroach,cockroachdb/cockroach,vivekmenezes/cockroach