Bug 29346: (follow-up) Build holds queue when AlterPriority or RevertWaitingStatus...

Bug 29346: (follow-up) Build holds queue when AlterPriority or RevertWaitingStatus is called

To test:
1 - Place 3 holds on a bib with a single item
2 - Confirm bib shows in holds queue
3 - Check in item and cnofirm hold
4 - Bib is no longer in queue
5 - Revert the waiting status
6 - The hold is in the queue again
7 - Move top hold to bottom
8 - Confirm queue selects hold for new top priorty patron

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>