[NNC] Disable masked fill (#49622)
Summary:
There's a bug internally, disable as quick fix before investigation
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49622
Test Plan:
Imported from GitHub, without a `Test Plan:` line.
build
Reviewed By: zheng-xq, PursueHappinessDirectly
Differential Revision: D25651897
Pulled By: eellison
fbshipit-source-id: dd1454f2ef7506d7844016128aa6320d7e69aa6e
