autotests: Fix testPointerConstraintsInterface with Qt 6 build

QTEST panics because of type difference (qsizetype vs int).

src/wayland/autotests/client/test_pointer_constraints.cpp

@@ -241,7 +241,8 @@ void TestPointerConstraints::testLockPointer()
     QCOMPARE(serverLockedPointer->cursorPositionHint(), QPointF(-1., -1.));
     QCOMPARE(lockedChangedSpy.count(), 2);
     QTEST(bool(serverSurface->lockedPointer()), "hasConstraintAfterUnlock");
-    QTEST(pointerConstraintsChangedSpy.count(), "pointerChangedCount");
+    QFETCH(int, pointerChangedCount);
+    QCOMPARE(pointerConstraintsChangedSpy.count(), pointerChangedCount);
     QVERIFY(unlockedSpy.wait());
     QCOMPARE(unlockedSpy.count(), 1);
     QCOMPARE(lockedSpy.count(), 1);
@@ -333,7 +334,8 @@ void TestPointerConstraints::testConfinePointer()
     QCOMPARE(serverConfinedPointer->isConfined(), false);
     QCOMPARE(confinedChangedSpy.count(), 2);
     QTEST(bool(serverSurface->confinedPointer()), "hasConstraintAfterUnlock");
-    QTEST(pointerConstraintsChangedSpy.count(), "pointerChangedCount");
+    QFETCH(int, pointerChangedCount);
+    QCOMPARE(pointerConstraintsChangedSpy.count(), pointerChangedCount);
     QVERIFY(unconfinedSpy.wait());
     QCOMPARE(unconfinedSpy.count(), 1);
     QCOMPARE(confinedSpy.count(), 1);