Don't support ParseFrom() on MSVC. It can cause ICEs.

Change-Id: I712554d582c672924956ab813a9decff2fbcc8ab
Reviewed-on: https://code-review.googlesource.com/c/re2/+/57990
Reviewed-by: Paul Wankadia <junyer@google.com>
(cherry picked from commit 703e42edf95194e3d13dbaff3de154bb620d1d54)
Reviewed-on: https://code-review.googlesource.com/c/re2/+/57991