Resolves: tdf#136611 chart doesn't support corner style or caps

Change-Id: Ibee5b90fff28504d87462b3839bb58dfc6911a39
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/105248
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/svx/source/sidebar/line/LinePropertyPanelBase.cxx b/svx/source/sidebar/line/LinePropertyPanelBase.cxx
index ea4110d..2c144e4 100644
--- a/svx/source/sidebar/line/LinePropertyPanelBase.cxx
+++ b/svx/source/sidebar/line/LinePropertyPanelBase.cxx
@@ -455,8 +455,10 @@ void LinePropertyPanelBase::ActivateControls()
{
    mxGridLineProps->set_sensitive(!mbNoneLineStyle);
    mxBoxArrowProps->set_sensitive(!mbNoneLineStyle);
    mxLineStyleTB->set_item_visible(".uno:LineEndStyle", mbArrowSupported);
    mxLineStyleTB->set_item_sensitive(".uno:LineEndStyle", !mbNoneLineStyle);

    mxBoxArrowProps->set_visible(mbArrowSupported);
    mxLineStyleTB->set_item_visible(".uno:LineEndStyle", mbArrowSupported);
}

void LinePropertyPanelBase::setMapUnit(MapUnit eMapUnit)