Don't do intermediate shrinking when AB experiment context is active
Don't do intermediate shrinking when AB experiment context is active

Summary: It's a current limitation of AB experiment contexts that it doesn't support a rebuilt of the cfg. Until that limitation is lifted, we just don't do it.

Reviewed By: adicatana

Differential Revision: D26210203

fbshipit-source-id: eb86a229b29a577ee436419384111cd254c6cb97

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