block: Add missing entry to hctx_flag_name[]

Add missing entry for NO_SCHED_BY_DEFAULT and reorder to match the enum.

Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240719112912.3830443-4-john.g.garry@oracle.com


Signed-off-by: Jens Axboe <axboe@kernel.dk>