fix: Abnormal behavior when dragging app icons to the tray window

log: The `onActionsAlwaysVisibleChanged` signal handler and `closeStashPopupTimer` timer in `tray.qml` failed to check the `stashedPopup.dropHover` state when determining whether to close the panel. This caused the panel to close immediately after drag-and-drop completion. Added a !stashedPopup.dropHover check to the panel closure condition to ensure the closure logic does not trigger while the user is dragging an icon onto the panel area.

pms: bug-336185

Author: JWWTSL

panels/dock/tray/package/tray.qml

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2023 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2023-2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -84,7 +84,7 @@ AppletItem {
     Connections {
         target: DDT.TraySortOrderModel
         function onActionsAlwaysVisibleChanged(val) {
-            if (!val && !Panel.contextDragging) {
+            if (!val && !Panel.contextDragging && !stashedPopup.dropHover) {
                 closeStashPopupTimer.start()
             }
         }
@@ -96,7 +96,7 @@ AppletItem {
         interval: 10
         repeat: false
         onTriggered: {
-            if (!Panel.contextDragging) {
+            if (!Panel.contextDragging && !stashedPopup.dropHover) {
                 stashedPopup.close()
             }
         }