[PyTorch][JIT] use a better hash table in alias analysis (#69854)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/69854
ghstack-source-id: 148315147
Test Plan: Time reported to start up static runtime on ctr_mobile_feed local_ro net is 8.8s instead of 9.5s
Reviewed By: suo, d1jang
Differential Revision: D33039733
fbshipit-source-id: 218dc7ff9aa421a352b71952ec77757368095860
(cherry picked from commit 7586712948051e990093f37ea7591bd3b85ee40b)
