qa: make test_progress atomically capture OSD marked in/out events

qa: make test_progress atomically capture OSD marked in/out events

Problem:
Test had a race condition where events could complete and disappear
between checking the event count and fetching the event, causing
test failures.

Solution:
Refactor to atomically capture events during the wait condition check.
Added helper methods _wait_for_osd_marked_out_event() and
_wait_for_osd_marked_in_event() that capture events at the moment
they're detected, eliminating the race window.

Fixes: https://tracker.ceph.com/issues/70320
Signed-off-by: Kamoltat (Junior) Sirivadhna <ksirivad@redhat.com>
(cherry picked from commit 0ef66f6f2e1881061ecb49e457bb2b9061c0260b)