Loosen type checking on input
Loosen type checking on input

Summary:
Do not trigger on `run_after_each_pass`. Helps with issue #489.

Add a message that it's turned off.

Reviewed By: kuganv

Differential Revision: D22187160

fbshipit-source-id: 3fa222c0d1df4279645e93cf74eef964fc35c245

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex