pybind/mg/progress: Disregard unreported pgs

pybind/mg/progress: Disregard unreported pgs

The global recovery event progress calculations only
takes into account pgs with `reported_epoch < start_epoch_of_event`
but sometimes the pgs doesn't get move before or after the creation
of the global recovery event, therefore this might result in a bug
where the global event gets stuck forever unless there is another
event that specifically makes the pgs that get stuck moves and updates
its `reported_epoch`.

Therefore, we decided to disregard pgs that are in active+clean state
but has `reported_epoch < start_epoch_of_event`.

Fixes: https://tracker.ceph.com/issues/49988
Signed-off-by: Kamoltat <ksirivad@redhat.com>