fix(whl_library): only add group machinery when it is needed#1822

rickeylev merged 1 commit intobazel-contrib:mainbazel-contrib/rules_python:mainfrom

aignas:fix/1760/use-group-templates-only-when-neededaignas/rules_python:fix/1760/use-group-templates-only-when-neededCopy head branch name to clipboard