ksmserver: Filter out services with NoDisplay=true

Solves a case where an application installs multiple desktop files
for handling different mime types. Typically those have NoDisplay=true
as recommended by the spec. But we want to associate the application
with the "main" desktop file.
An example of this happening within KDE is KDevelop.

ksmserver/server.cpp

@@ -135,7 +135,7 @@ void KSMServer::startApplication(const QStringList &cmd, const QString &clientMa
     auto *job = new KIO::CommandLauncherJob(app, argList);
     auto apps = KApplicationTrader::query([&app](const KService::Ptr service) {
         const QString binary = KIO::DesktopExecParser::executablePath(service->exec());
-        return !binary.isEmpty() && app.endsWith(binary);
+        return !service->noDisplay() && !binary.isEmpty() && app.endsWith(binary);
     });
     if (!apps.empty()) {
         job->setDesktopName(apps[0]->desktopEntryName());