improve when dock can hide itself

--when an applet becomes activated then the dock
shouldnt hide itself until the applet to become
inactive

app/dockview.cpp

@@ -366,12 +366,14 @@ inline void DockView::syncGeometry()
 
 void DockView::statusChanged(Plasma::Types::ItemStatus status)
 {
-    if ((status == Plasma::Types::NeedsAttentionStatus) ||
+    if (containment()) {
-        (status == Plasma::Types::RequiresAttentionStatus)) {
+        if (containment()->status() >= Plasma::Types::NeedsAttentionStatus &&
+            containment()->status() != Plasma::Types::HiddenStatus) {
             m_visibility->setBlockHiding(true);
         } else {
             m_visibility->setBlockHiding(false);
         }
+    }
 }
 
 int DockView::currentThickness() const