tar: Rewrite to use requiredBy instead of _requiredBy
tar: Rewrite to use requiredBy instead of _requiredBy

Credit: da39a3ee5e6b4b0d3255bfef95601890afd80709@iarna
PR-URL: https://github.com/npm/npm/pull/12775

misterbyrne/npm,DaveEmmerson/npm,misterbyrne/npm,chadnickbok/npm,Volune/npm,DaveEmmerson/npm,evocateur/npm,Volune/npm,DaveEmmerson/npm,evocateur/npm,evocateur/npm,chadnickbok/npm,chadnickbok/npm,Volune/npm,misterbyrne/npm