Turn off layer norm in jit symbolic differentiation (#63816)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/63816
Test Plan:
Confirmed this can rescue the NE:
https://www.internalfb.com/mast/job/torchx_xdwang-SparseNNApplication_72cf593d
Reviewed By: ngimel
Differential Revision: D30498746
fbshipit-source-id: 4a387f32ee2f70685de6104459c7f21bfbddc187
