tests: skip tst_QCompleter::showPopupInGraphicsView() on Wayland

Task-number: QTBUG-107186
Pick-to: 6.4 6.2
Change-Id: I1f67c0b7c70dec210989073660db6b03afb98fff
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

tests/auto/widgets/util/qcompleter/tst_qcompleter.cpp

@@ -1831,6 +1831,9 @@ void tst_QCompleter::QTBUG_51889_activatedSentTwice()
 
 void tst_QCompleter::showPopupInGraphicsView()
 {
+    if (QGuiApplication::platformName().startsWith(QLatin1String("wayland"), Qt::CaseInsensitive))
+        QSKIP("Wayland: Skip this test, see also QTBUG-107186");
+
     QGraphicsView view;
     QGraphicsScene scene;
     view.setScene(&scene);