Change for QTRY_VERIFY in flaky auto test focusNextOnHide()

Auto test tst_QAbstractItemView::focusNextOnHide() is flaky where
QVERIFY(table.hasFocus()) sometimes return false where it should be
true.

Modify QVERIFY for QTRY_VERIFY to give the necessary time to the XCB
thread to proceed.

Removes the flakiness when testing on OpenSuse 15.5

Change-Id: I83690e7c851430c040a57713516a5df990a89c32
Reviewed-by: Axel Spoerl <[email protected]>

tests/auto/widgets/itemviews/qabstractitemview/tst_qabstractitemview.cpp

@@ -3556,7 +3556,7 @@ void tst_QAbstractItemView::focusNextOnHide()
     widget.show();
     QVERIFY(QTest::qWaitForWindowExposed(&widget));
 
-    QVERIFY(table.hasFocus());
+    QTRY_VERIFY(table.hasFocus());
     QCOMPARE(table.currentIndex(), table.model()->index(0, 0));
     QTest::keyPress(&table, Qt::Key_Tab);
     QCOMPARE(table.currentIndex(), table.model()->index(0, 1));