Use KIO::JobUiDelegate for opening other application

KNotificationJobUiDelegate cannot open an 'Open With' dialog which is what we need here. Instead use the KIO delegate that can

BUG: 445530
(cherry picked from commit 2b769332)

src/Gui/ExportMenu.cpp

@@ -9,6 +9,7 @@
 
 #include <KApplicationTrader>
 #include <KIO/ApplicationLauncherJob>
+#include <KIO/JobUiDelegate>
 #include <KLocalizedString>
 #include <KNotificationJobUiDelegate>
 #include <KStandardShortcut>
@@ -99,7 +100,7 @@ void ExportMenu::getKServiceItems()
         const QUrl filename = mExportManager->getAutosaveFilename();
         mExportManager->doSave(filename);
         auto job = new KIO::ApplicationLauncherJob;
-        job->setUiDelegate(new KNotificationJobUiDelegate(KJobUiDelegate::AutoHandlingEnabled));
+        job->setUiDelegate(new KIO::JobUiDelegate(KJobUiDelegate::AutoHandlingEnabled, window()));
         job->setUrls({filename});
         job->start();
     });