NotifyResize was called after a deck was closed,
so this is the wrong place to ensure minimum sidebar width.

Change-Id: I5a03dc1ee24257d49673db58bffbda1a7358cf3a
Reviewed-on: https://gerrit.libreoffice.org/70597
Tested-by: Jenkins
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>