Bug 22690: (QA follow-up) Index also source biblio when calling move_to_biblio()

Bug 22690: (QA follow-up) Index also source biblio when calling move_to_biblio()

We need to update the search index record for the old biblio where the
item was moved from to keep the item info in search index up-to-date.

To test:
1) $ prove t/db_dependent/Koha/SearchEngine/Indexer.t

Signed-off-by: Joonas Kylmälä <joonas.kylmala@helsinki.fi>
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>