Fix ::sapi::v::Char::ToString()
Fix ::sapi::v::Char::ToString()

Also make it correct with scoped enums.

PiperOrigin-RevId: 422310326
Change-Id: Ie2db81ec7c8d8ecd8d5fb79573bc9f5040fd8c3b

google/sandboxed-api,google/sandboxed-api,google/sandboxed-api,google/sandboxed-api