compaction_manager: run_offstrategy_compaction: retrieve owned_ranges…

… from compaction_state

perform_offstrategy is called from try_perform_cleanup
when there are sstables in the maintenance set that require
cleanup.  In this case the compaction_state.owned_ranges_ptr
is set, but run_offstrategy_compaction currently ignores
that and doesn't piggyback cleanup on reshape, which
it must.

Fixes scylladb#15041

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>

compaction/compaction_manager.cc

@@ -1308,6 +1308,7 @@ class offstrategy_compaction_task_executor : public compaction_task_executor, pu
                 new_unused_sstables.insert(sst);
                 return sst;
             };
+            desc->owned_ranges = _compaction_state.owned_ranges_ptr;
             auto input = boost::copy_range<std::unordered_set<sstables::shared_sstable>>(desc->sstables);
 
             sstables::compaction_result ret;