rgw: treat -EFBIG as advance-and-retry in unordered listing

rgw: treat -EFBIG as advance-and-retry in unordered listing

The RGW cls bucket listing may return RGWBIAdvanceAndRetryError(-EFBIG) when it cannot return any visible entries in a call but has advanced the marker; callers are expected to retry with the updated marker.

RGWRados::cls_bucket_list_unordered() treated this condition as a fatal error and aborted the listing, which could prematurely terminate listings for buckets with many non-visible entries.

This change handles RGWBIAdvanceAndRetryError by advancing to the returned marker and continuing the loop, correctly interpreting it as "advance and retry."

Fixes: https://tracker.ceph.com/issues/63721
Signed-off-by: PARK BEOMSEOK <beomseok.park@linecorp.com>