[Static Runtime] [Code Cleanup] Use `SROperator` for operators' function type (#73450)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/73450
This change uses `SROperator` for operators' function type
Test Plan: N/A
Reviewed By: mikeiovine
Differential Revision: D34483246
fbshipit-source-id: ed544bb91b676ed08983dc8dc78cedd0f77d499f
(cherry picked from commit eb9de3ad8de043990c02f30ffa48a29c8e5e81f2)
