Merge pull request #57204 from rzarzynski/wip-crimson-osd-read-clamp

crimson/osd: clamp reads to object size and bring full read trimming

Reviewed-by: Samuel Just <sjust@redhat.com>
Reviewed-by: Matan Breizman <mbreizma@redhat.com>

diff --cc src/crimson/osd/pg_backend.cc
Simple merge