storage: modify transaction after cloning, not before
storage: modify transaction after cloning, not before

Fixes #10900.

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