fdo#73070 - UI: "Insert shapes" does not belong under "Properties"

Change-Id: I6fe9c21b13d154744721cec564d7a3f5974d12a4
Reviewed-on: https://gerrit.libreoffice.org/7804
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>