Otherwise, a Database field in a paragraph which is non-empty would
force the paragraph to be visible, regardless of HiddenPara field
telling it to be hidden.

Regression from commit db04be03

Reviewed-on: https://gerrit.libreoffice.org/59792
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>
(cherry picked from commit 64cb57c8)
Reviewed-on: https://gerrit.libreoffice.org/59865Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

Change-Id: I21807e22bd339fd1ea0aaa3b382579f688903418
Reviewed-on: https://gerrit.libreoffice.org/60025Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Tested-by: Mike Kaganski <mike.kaganski@collabora.com>
Reviewed-by: Andras Timar <andras.timar@collabora.com>