[FX] Fix operator_schemas normalize_function to consider OpOverloads (#76469)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/76469
Broken by Original commit changeset: 450e86c4e08a
Original Phabricator Diff: D35874477
Test Plan: Added unit test coverage to test_fx_experimental
Reviewed By: albanD
Differential Revision: D35978105
fbshipit-source-id: f22670b3b00a86777a26feaf4cb911595d150a17
(cherry picked from commit 91868b1e872c19d58d96a6c80a5e78dc6ffe4c7b)
