fdo#73151 Always open Styles&Formatting dialog in the sidebar

Change-Id: I05b63dc00023945d92fd837bd64042135d3f9aed
Reviewed-on: https://gerrit.libreoffice.org/11648
Reviewed-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>
Tested-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>