tests: skip tst_QApplication::abortQuitOnShow() on Wayland

The test started to "crash" since 576c9160b1.

Task-number: QTBUG-123172
Change-Id: I16c78f517f718510aa22a2e24ed3d502edae52e5
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

tests/auto/widgets/kernel/qapplication/tst_qapplication.cpp

@@ -2609,6 +2609,9 @@ private:
 
 void tst_QApplication::abortQuitOnShow()
 {
+    if (QGuiApplication::platformName().startsWith(QLatin1String("wayland"), Qt::CaseInsensitive))
+        QSKIP("Wayland: This crash, see QTBUG-123172.");
+
     int argc = 0;
     QApplication app(argc, nullptr);
     ShowCloseShowWidget window1(false);