[PackageCMO] Add back missing change for package scope in table entry visibility check

rdar://130222362

Author: elsh

lib/AST/Decl.cpp

@@ -4589,6 +4589,8 @@ bool ValueDecl::isMoreVisibleThan(ValueDecl *other) const {
 
   if (scope.isPublic())
     return !otherScope.isPublic();
+  else if (scope.isPackage())
+    return !otherScope.isPublicOrPackage();
   else if (scope.isInternal())
     return !otherScope.isPublic() && !otherScope.isInternal();
   else