selecting the index sets it as active and updates the previews, so if its an
inactive index and resize happens, leave it as inactive but selected

Change-Id: If823f6b3e8f2ee4e77ba5e5d0202d72893ed614c
Reviewed-on: https://gerrit.libreoffice.org/55346Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
(cherry picked from commit 63e15466)