Merge pull request #53961 from Matan-B/wip-52128-reef

reef: crimson/os/seastore/journal/cbj: generalize scan_valid_records()

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

diff --cc src/crimson/os/seastore/CMakeLists.txt
Simple merge

diff --cc src/crimson/os/seastore/journal/circular_journal_space.cc
Simple merge

diff --cc src/crimson/os/seastore/journal/circular_journal_space.h
Simple merge

diff --cc src/crimson/os/seastore/seastore_types.h
Simple merge