[autotests] Skip PlasmaWindowTest::testLockScreenNoPlasmaWindow on build.kde.org

Needs to start kscreenlocker_greet which needs EGL which we don't have.

autotests/wayland/plasmawindow_test.cpp

@@ -358,6 +358,9 @@ void PlasmaWindowTest::testPopupWindowNoPlasmaWindow()
 
 void PlasmaWindowTest::testLockScreenNoPlasmaWindow()
 {
+    if (!QFile::exists(QStringLiteral("/dev/dri/card0"))) {
+        QSKIP("Needs a dri device");
+    }
     // this test verifies that lock screen windows are not exposed to PlasmaWindow
     QSignalSpy plasmaWindowCreatedSpy(m_windowManagement, &PlasmaWindowManagement::windowCreated);
     QVERIFY(plasmaWindowCreatedSpy.isValid());