Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kf6-kwindowsystem/source/autotests/compositingenabled_test.cpp

@@ -0,0 +1,44 @@
+/*
+    SPDX-FileCopyrightText: 2016 Martin Gräßlin <mgraesslin@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-or-later
+*/
+#include <KWindowSystem>
+#include <QSignalSpy>
+#include <QTest>
+
+#include "kselectionowner.h"
+#include "kx11extras.h"
+
+class CompositingEnabledTest : public QObject
+{
+    Q_OBJECT
+private Q_SLOTS:
+    void testRecreatingNetEventFilter();
+};
+
+void CompositingEnabledTest::testRecreatingNetEventFilter()
+{
+    // this test simulates the condition that the compositor gets enabled while the NetEventFilter gets recreated
+    QVERIFY(!KX11Extras::compositingActive());
+
+    // fake the compositor
+    QSignalSpy compositingChangedSpy(KX11Extras::self(), &KX11Extras::compositingChanged);
+    QVERIFY(compositingChangedSpy.isValid());
+    KSelectionOwner compositorSelection("_NET_WM_CM_S0");
+    QSignalSpy claimedSpy(&compositorSelection, &KSelectionOwner::claimedOwnership);
+    QVERIFY(claimedSpy.isValid());
+    compositorSelection.claim(true);
+    connect(&compositorSelection, &KSelectionOwner::claimedOwnership, [] {
+        // let's connect to a signal which will cause a re-creation of NetEventFilter
+        QSignalSpy workAreaChangedSpy(KX11Extras::self(), &KX11Extras::workAreaChanged);
+        QVERIFY(workAreaChangedSpy.isValid());
+    });
+
+    QVERIFY(claimedSpy.wait());
+    QTRY_VERIFY(KX11Extras::compositingActive());
+    QCOMPARE(compositingChangedSpy.count(), 1);
+}
+
+QTEST_MAIN(CompositingEnabledTest)
+#include "compositingenabled_test.moc"