fix: Setting notifications number less than 3, do not display overlay

as title

Log: as title
Bug: https://pms.uniontech.com/bug-view-290185.html

Author: yixinshark

panels/notification/bubble/bubblemodel.cpp

@@ -292,9 +292,10 @@ void BubbleModel::updateLevel()
     if (m_bubbles.isEmpty())
         return;
 
+    int lastBubbleMaxIndex = BubbleMaxCount - 1;
     for (int i = 0; i < displayRowCount(); i++) {
         auto item = m_bubbles.at(i);
-        item->setLevel(i == LastBubbleMaxIndex ? 1 + overlayCount() : 1);
+        item->setLevel(i == lastBubbleMaxIndex ? 1 + overlayCount() : 1);
     }
     Q_EMIT dataChanged(index(0), index(displayRowCount() - 1), {BubbleModel::Level});
 }

panels/notification/bubble/bubblemodel.h

@@ -75,7 +75,6 @@ class BubbleModel : public QAbstractListModel
     QTimer *m_updateTimeTipTimer = nullptr;
     QList<BubbleItem *> m_bubbles;
     int BubbleMaxCount{3};
-    const int LastBubbleMaxIndex{BubbleMaxCount - 1};
     const int OverlayMaxCount{2};
     const int NoReplaceId{0};
     QList<qint64> m_delayBubbles;