revert: remove automatic focus setting on launcher visibility

This reverts commit a8dd424.
Remove the forceActiveFocus() call on search edit when launcher becomes
visible, restoring the previous behavior where focus management was
handled differently.

回退自动设置启动器可见时的焦点功能。移除启动器可见时对搜索框调用
forceActiveFocus() 的代码，恢复之前的焦点管理行为。

PMS: BUG-301743

Author: Ivy233

qml/FullscreenFrame.qml

@@ -883,12 +883,8 @@ InputEventItem {
         Connections {
             target: LauncherController
             function onVisibleChanged() {
-                if (LauncherController.visible) {
-                    searchEdit.forceActiveFocus()
-                    return
-                }
-
                 // only do these clean-up steps on launcher get hide
+                if (LauncherController.visible) return
                 // clear searchEdit text
                 searchEdit.text = ""
                 if (listviewPage.currentItem) {

qml/windowed/WindowedFrame.qml

@@ -303,12 +303,9 @@ InputEventItem {
     Connections {
         target: LauncherController
         function onVisibleChanged() {
-            if (LauncherController.visible) {
-                bottomBar.searchEdit.forceActiveFocus()
-                return
-            }
-
             // only do these clean-up steps on launcher get hide
+            if (LauncherController.visible) return
+
             // clear searchEdit text
             bottomBar.searchEdit.text = ""
             // reset(remove) keyboard focus