mail/bogofilter*: fix unaligned access on some databases

This was found with the undefined behavior sanitizer,
and affects the generic code (independent of the concrete database
back-end in use) so we need to bump all PORTREVISIONS.

The bug was that internal code was casting a void * to a uint32_t *
without ensuring alignment of the source value.

Let's use memcpy to a statically-sized array and let the optimizer
handle it for us. Adds files/patch-src_datastore.c.

PR: 297024
MFH: 2026Q3
(cherry picked from commit edee11f3ade730ece6643703213c3823d67b8138)