don't lose the final position on showEvent

if there is an animation running and a showEvent happens, set the position to the supposed endValue before killing the animation

BUG:331981

src/declarativeimports/core/tooltipdialog.cpp

@@ -91,6 +91,7 @@ void ToolTipDialog::showEvent(QShowEvent *event)
 {
     m_showTimer->start(m_hideTimeout);
 
+    setPosition(m_animation->endValue().toPoint());
     m_animation->stop();
     Dialog::showEvent(event);
 }