sql: rename col_label to unrestricted_name
sql: rename col_label to unrestricted_name

Fixes #8593

petermattis/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,maxlang/cockroach,veteranlu/cockroach,glycerine/cockroach,paperstreet/cockroach,cockroachdb/cockroach,petermattis/cockroach,veteranlu/cockroach,maxlang/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,petermattis/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,cockroachdb/cockroach,maxlang/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,glycerine/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,maxlang/cockroach,maxlang/cockroach,cockroachdb/cockroach,veteranlu/cockroach,maxlang/cockroach,glycerine/cockroach,vaibhavarora/cockroach,maxlang/cockroach,petermattis/cockroach,veteranlu/cockroach,paperstreet/cockroach,paperstreet/cockroach,maxlang/cockroach,petermattis/cockroach,glycerine/cockroach,vaibhavarora/cockroach,cockroachdb/cockroach,glycerine/cockroach,paperstreet/cockroach,petermattis/cockroach,petermattis/cockroach,paperstreet/cockroach,paperstreet/cockroach,veteranlu/cockroach,petermattis/cockroach,cockroachdb/cockroach,glycerine/cockroach,cockroachdb/cockroach,glycerine/cockroach,vaibhavarora/cockroach,glycerine/cockroach