block: reuse original bio_vec array for integrity during clone

Modify bio_integrity_clone to reuse the original bvec array instead of
allocating and copying it, similar to how bio data path is cloned.

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240702100753.2168-1-anuj20.g@samsung.com


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