Make some adjustments to Cpp2Ops to play nice with MSVC's alias template SFINAE issues
Make some adjustments to Cpp2Ops to play nice with MSVC's alias template SFINAE issues

Summary: MSVC was in the way.

Reviewed By: yfeldblum

Differential Revision: D10035430

fbshipit-source-id: 8d959ede859ee650f9d1f941594f588e1c7b5100

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