Bug 33568: Fix columns shift when pref are off

Bug 33568: Fix columns shift when pref are off

From comment 66:
If StaffDetailItemSelection and/or LocalCoverImages is turned off, the alignment of the drop-down filters for the other columns is offset by 1 for each of the two sysprefs that is disabled

Signed-off-by: Laurence Rault <laurence.rault@biblibre.com>
Signed-off-by: Emily Lamancusa <emily.lamancusa@montgomerycountymd.gov>
Signed-off-by: Tomás Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>