lok: Don't even try to paint the ruler via LibreOfficeKit.

But we need to have it behind the scenes, otherwise the Online's ruler
does not get notifications.

Change-Id: I72bef28cb15c462572b511449d538b067f7cb141
Reviewed-on: https://gerrit.libreoffice.org/56598
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>
(cherry picked from commit ee6e6bd5b853aa68c9721f53b5892384e7403eec)
Reviewed-on: https://gerrit.libreoffice.org/56601
Tested-by: Jenkins
Reviewed-by: Jan Holesovsky <kendy@collabora.com>

sw/source/uibase/misc/swruler.cxx

@@ -96,6 +96,9 @@ void SwCommentRuler::dispose()
 
 void SwCommentRuler::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect)
 {
+    if (comphelper::LibreOfficeKit::isActive())
+        return; // no need to waste time on startup
+
     SvxRuler::Paint(rRenderContext, rRect);
 
     // Don't draw if there is not any note