fix: mypy errs

Author: BobTheBuidler

mypyc/primitives/dict_ops.py

@@ -383,7 +383,7 @@
 )
 
 # dict.copy()
-true_dict_copy_op = method_op(
+method_op(
     name="copy",
     arg_types=[true_dict_rprimitive],
     return_type=true_dict_rprimitive,
@@ -400,6 +400,15 @@
     error_kind=ERR_MAGIC,
 )
 
+# dict.copy() custom_op
+true_dict_copy_op = method_op(
+    name="copy",
+    arg_types=[true_dict_rprimitive],
+    return_type=true_dict_rprimitive,
+    c_function_name="PyDict_Copy",
+    error_kind=ERR_MAGIC,
+)
+
 # list(dict.keys())
 true_dict_keys_op = custom_op(
     arg_types=[true_dict_rprimitive],