fix: move TapHandler outside MouseArea to fix event handling

Moved the TapHandler from inside the MouseArea to be a direct child of
the NotifyItem. This change resolves event handling conflicts where the
TapHandler was not receiving taps properly due to being nested within
the MouseArea. The TapHandler is now positioned after the MouseArea
in the QML structure, ensuring it can properly capture tap events for
expanding notifications when enabled.

Log: Fixed notification expansion not working when clicking on certain
areas

Influence:
1. Test clicking on notification items to ensure they expand correctly
2. Verify that notifications with enableDismissed=false can be expanded
via tap
3. Test keyboard navigation with Enter/Return keys still works for
expansion
4. Verify that dismissed notifications (enableDismissed=true) cannot
be expanded
5. Check that focus handling works correctly when tapping notifications

fix: 将 TapHandler 移出 MouseArea 以修复事件处理

将 TapHandler 从 MouseArea 内部移动到 NotifyItem 的直接子元素。此更改解
决了事件处理冲突，由于 TapHandler 嵌套在 MouseArea 内导致无法正确接收点
击事件的问题。现在 TapHandler 在 QML 结构中位于 MouseArea 之后，确保在启
用时能够正确捕获用于展开通知的点击事件。

Log: 修复了点击某些区域时通知无法展开的问题

Influence:
1. 测试点击通知项以确保它们能正确展开
2. 验证 enableDismissed=false 的通知可以通过点击展开
3. 测试键盘导航，确保 Enter/Return 键仍能用于展开
4. 验证已关闭的通知（enableDismissed=true）无法展开
5. 检查点击通知时的焦点处理是否正常工作

PMS: BUG-353605

Author: wjyrich

panels/notification/center/OverlapNotify.qml

@@ -180,17 +180,16 @@ NotifyItem {
                 }
             }
         }
-
-        // expand
-        TapHandler {
-            enabled: !root.enableDismissed
-            acceptedButtons: Qt.LeftButton
-            onTapped: {
-                root.forceActiveFocus()
-                root.expand()
-            }
-        }
         Keys.onEnterPressed: root.expand()
         Keys.onReturnPressed: root.expand()
     }
+    // expand
+    TapHandler {
+        enabled: !root.enableDismissed
+        acceptedButtons: Qt.LeftButton
+        onTapped: {
+            root.forceActiveFocus()
+            root.expand()
+        }
+    }
 }