Take wxDC transformations into account when resetting clipping with GTK3

The paint update region is in device coordinates, it needs to be converted to
current logical coordinates to apply correctly. See #18584, #18560

src/gtk/dc.cpp

@@ -355,7 +355,9 @@ void wxPaintDCImpl::DestroyClippingRegion()
     int x, y, w, h;
     m_clip.GetBox(x, y, w, h);
     cairo_t* cr = static_cast<cairo_t*>(GetCairoContext());
-    cairo_rectangle(cr, x, y, w, h);
+    cairo_rectangle(cr,
+        DeviceToLogicalX(x), DeviceToLogicalY(y),
+        DeviceToLogicalXRel(w), DeviceToLogicalYRel(h));
     cairo_clip(cr);
 }
 //-----------------------------------------------------------------------------