btrfs: validate queue limits

Call blk_validate_limits on the queue limits used for zone append
splitting so that calculated values get filled in and any stacking
conflicts get cought.

Without this there isn't a max_zone_append_sectors limits as of commit
559218d4 ("block: pre-calculate max_zone_append_sectors").

Fixes: 559218d4 ("block: pre-calculate max_zone_append_sectors")
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20241113084541.34315-3-hch@lst.de


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