Summary:
When using clang, libc++, and c++17, merely mentioning a Range with a non-pod
value-type will give a compile error due to a static assert while attemption to
instantiate a basic_string_view. Using a StrictConjunction seems to fix this
issue.

Reviewed By: yfeldblum

Differential Revision: D10472408

fbshipit-source-id: 28d50d0a99994049bfcd9ac29168fb2f1d1c5867