Restore `bool T::ParseFrom(const char*, size_t)` support for MSVC. IIRC, it was problematic for MSVC 2017 and/or MSVC 2019, but https://github.com/google/oss-policies-info/commit/dca3ce04cd812e03c71107a7fdea419acbd6432c raised the support baseline to MSVC 2022, so let's try it... Change-Id: Id00483381c1f6c499a2da0c2d40d235c95dedfaa Reviewed-on: https://code-review.googlesource.com/c/re2/+/63050 Reviewed-by: Alex Chernyakhovsky <achernya@google.com> Reviewed-by: Paul Wankadia <junyer@google.com>