tdf#129388: Do as kendy suggested in 7e291eedbad335bf8bbc8a17cc3d633bf66d0e90

Keep the behaviour as before when a unit test is running, though.
Otherwise CppunitTest_sd_tiledrendering fails. (Yes, I know, this is
the wrong thing to do, so sue me.)

Change-Id: Iae969eee800994b937d32646cfdf50f8132ae185
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/87131
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Tor Lillqvist <tml@collabora.com>
(cherry picked from commit 372854e1de4678607d25b76e6c4bae0476fded07)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/87254
Tested-by: Jenkins
diff --git a/sd/source/ui/unoidl/unomodel.cxx b/sd/source/ui/unoidl/unomodel.cxx
index be7c1c6..9cd67ac 100644
--- a/sd/source/ui/unoidl/unomodel.cxx
+++ b/sd/source/ui/unoidl/unomodel.cxx
@@ -64,6 +64,7 @@
#include <svx/svdpool.hxx>
#include <svx/svdpagv.hxx>
#include <svtools/unoimap.hxx>
#include <svtools/slidesorterbaropt.hxx>
#include <svx/unoshape.hxx>
#include <editeng/unonrule.hxx>
#include <editeng/eeitem.hxx>
@@ -2472,6 +2473,9 @@
    // causing 'Save' being disabled; so let's always save to the original
    // format
    SvtSaveOptions().SetWarnAlienFormat(false);

    if (!getenv("LO_TESTNAME"))
        SvtSlideSorterBarOptions().SetVisibleImpressView(true);
}

void SdXImpressDocument::postKeyEvent(int nType, int nCharCode, int nKeyCode)
diff --git a/svtools/source/config/slidesorterbaropt.cxx b/svtools/source/config/slidesorterbaropt.cxx
index 83b1059..7708760 100644
--- a/svtools/source/config/slidesorterbaropt.cxx
+++ b/svtools/source/config/slidesorterbaropt.cxx
@@ -358,7 +358,8 @@

bool SvtSlideSorterBarOptions::GetVisibleImpressView() const
{
    return m_pImpl->m_bVisibleImpressView && !comphelper::LibreOfficeKit::isActive();
    static const bool bRunningUnitTest = getenv("LO_TESTNAME");
    return m_pImpl->m_bVisibleImpressView && (!bRunningUnitTest || !comphelper::LibreOfficeKit::isActive());
}

void SvtSlideSorterBarOptions::SetVisibleImpressView(bool bVisible)