fixing assert condition (#74239)
Summary:
fixing assert for `_jit_set_fusion_strategy`
Pull Request resolved: https://github.com/pytorch/pytorch/pull/74239
Reviewed By: H-Huang
Differential Revision: D34896284
Pulled By: eellison
fbshipit-source-id: a4daec70f68dcae2098447551ea071c744f6b0b7
(cherry picked from commit 60746f45b69e0448232626d1d601e8051dc5d427)
