Allow dynamo to handle str.xxx() (#146587)

Summary:
Fixes #146350

X-link: pytorch/pytorch#146587
Approved by: https://github.com/zou3519

Reviewed By: huydhn

Differential Revision: D69538165

fbshipit-source-id: 28bed9d47aab6c4ac8218a80c2ac40b670f5e118

Author: generatedunixname499836121

userbenchmark/dynamo/dynamobench/_dynamo/utils.py

@@ -2359,6 +2359,8 @@ def check_numpy_ndarray_args(args, kwargs):
 list_methods = {method for method in list.__dict__.values() if callable(method)}
 list_getitem = list.__getitem__
 
+str_methods = {method for method in str.__dict__.values() if callable(method)}
+
 
 def builtin_dict_keys(d):
     # Avoids overridden keys method of the dictionary