sw: invalidate after keypresses when we have a callback

Ideally we could always just invalidate and paint when the main loop
says so, but currently without priorities that can take some time.

So just do the invalidate-then-paint when we have a callback that is
listening to invalidations.

Change-Id: I6a835a0a149ae01a4ece3a319dffbe81cd5bd3eb

sw/source/core/view/viewsh.cxx

@@ -393,7 +393,10 @@ void SwViewShell::ImplEndAction( const bool bIdleEnd )
 
                         if ( bPaintsFromSystem )
                             PaintDesktop( aRect );
-                        pCurrentLayout->Paint( aRect );
+                        if (!mpLibreOfficeKitCallback)
+                            pCurrentLayout->Paint( aRect );
+                        else
+                            pCurrentLayout->GetCurrShell()->InvalidateWindows(aRect.SVRect());
 
                         // #i75172# end DrawingLayer paint
                         DLPostPaint2(true);