Update for_helpers.py

Author: BobTheBuidler

mypyc/irbuild/for_helpers.py

@@ -1252,7 +1252,7 @@ def expr_has_specialized_for_helper(builder: IRBuilder, expr: Expression) -> boo
     if isinstance(expr.callee, RefExpr):
         return expr.callee.fullname in {"builtins.range", "builtins.enumerate", "builtins.zip"}
     elif isinstance(expr.callee, MemberExpr):
-        return expr.callee.fullname in {"keys", "values", "items"}
+        return expr.callee.fullname in {"builtins.dict.keys", "builtins.dict.values", "builtins.dict.items"}
     return False