[Any Propagation] propagate anys covariantly through OpenPredT
[Any Propagation] propagate anys covariantly through OpenPredT

Summary: Any propagation for objects activated some `any -> OpenPredT` flows that were not possible in the existing system. This propagates `any` covariantly through `OpenPredT` to remove these errors.

Reviewed By: panagosg7

Differential Revision: D14508971

fbshipit-source-id: b20eebbb5eba1576e67f5909e4e00e19d1cfed0c

samwgoldman/flow,mroch/flow,samwgoldman/flow,gabelevi/flow,mroch/flow,gabelevi/flow,gabelevi/flow,mroch/flow,mroch/flow,samwgoldman/flow,facebook/flow,gabelevi/flow,samwgoldman/flow,gabelevi/flow,samwgoldman/flow,facebook/flow,gabelevi/flow,mroch/flow,facebook/flow,gabelevi/flow,samwgoldman/flow,facebook/flow,facebook/flow,mroch/flow,facebook/flow,mroch/flow,facebook/flow,samwgoldman/flow