LU-18250 ldiskfs: refresh Ubuntu 24.04 6.8.0-45-generic

LU-18250 ldiskfs: refresh Ubuntu 24.04 6.8.0-45-generic

A recent kernel update needs to use newer patches from 6.10:
   ext4-prealloc.patch
   ext4-delayed-iput.patch

Also add a kernel patch level check for Ubuntu 6.8 in to
select pick the newer series and fix a typo in the 5.11 check

Test-Parameters: trivial
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: I0fffb37fc29c1747d6aa7833111116095c55b666
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56445
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Tested-by: Shuichi Ihara <sihara@ddn.com>
Reviewed-by: Shuichi Ihara <sihara@ddn.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>