xdgactivation: Make sure we don't call setStartupId with an x11 token

Besides not working on Wayland, it will prevent the job from fetching a
working token.

applets/kicker/plugin/appentry.cpp

@@ -36,6 +36,7 @@
 #include <KShell>
 #include <KStartupInfo>
 #include <KSycoca>
+#include <KWindowSystem>
 
 #include <Plasma/Plasma>
 
@@ -213,7 +214,9 @@ bool AppEntry::run(const QString &actionId, const QVariant &argument)
         auto *job = new KIO::ApplicationLauncherJob(m_service);
         job->setUiDelegate(new KNotificationJobUiDelegate(KJobUiDelegate::AutoHandlingEnabled));
         job->setRunFlags(KIO::ApplicationLauncherJob::DeleteTemporaryFiles);
+        if (KWindowSystem::isPlatformX11()) {
             job->setStartupId(KStartupInfo::createNewStartupIdForTimestamp(timeStamp));
+        }
         job->start();
 
         KActivities::ResourceInstance::notifyAccessed(QUrl(QStringLiteral("applications:") + m_service->storageId()), QStringLiteral("org.kde.plasma.kicker"));

applets/kicker/plugin/recentusagemodel.cpp

@@ -41,6 +41,7 @@
 #include <KActivities/Stats/Cleaning>
 #include <KActivities/Stats/ResultModel>
 #include <KActivities/Stats/Terms>
+#include <KWindowSystem>
 
 namespace KAStats = KActivities::Stats;
 
@@ -400,7 +401,9 @@ bool RecentUsageModel::trigger(int row, const QString &actionId, const QVariant
 
         auto *job = new KIO::ApplicationLauncherJob(service);
         job->setUiDelegate(new KNotificationJobUiDelegate(KJobUiDelegate::AutoHandlingEnabled));
+        if (KWindowSystem::isPlatformX11()) {
             job->setStartupId(KStartupInfo::createNewStartupIdForTimestamp(timeStamp));
+        }
         job->start();
 
         KActivities::ResourceInstance::notifyAccessed(QUrl(QStringLiteral("applications:") + storageId), QStringLiteral("org.kde.plasma.kicker"));

libtaskmanager/launchertasksmodel.cpp

@@ -573,7 +573,9 @@ void LauncherTasksModel::requestOpenUrls(const QModelIndex &index, const QList<Q
     auto *job = new KIO::ApplicationLauncherJob(service);
     job->setUiDelegate(new KNotificationJobUiDelegate(KJobUiDelegate::AutoErrorHandlingEnabled));
     job->setUrls(urls);
+    if (KWindowSystem::isPlatformX11()) {
         job->setStartupId(KStartupInfo::createNewStartupIdForTimestamp(timeStamp));
+    }
     job->start();
 
     KActivities::ResourceInstance::notifyAccessed(QUrl(QStringLiteral("applications:") + service->storageId()), QStringLiteral("org.kde.libtaskmanager"));