Bug 24446: Improve StockRotationItem->advance tests

Bug 24446: Improve StockRotationItem->advance tests

This patch adds additional checks in the tests for item homebranch
updates and cyclical transfers caused by the StockRotationItem->advance
method.

It highlights a bug in the original logic whereby a cyclical rotation
would always result in a completed transfer but the physical item would
not have actually been moved between branches.

Signed-off-by: Kathleen Milne <kathleen.milne@cne-siar.gov.uk>
Signed-off-by: Joonas Kylmälä <joonas.kylmala@helsinki.fi>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>