Android: Fix inverted equals condition on QtAccessibilityDelegate

Got inverted during child window refactoring, leading to broken
accessibility.
Amends commit 0a92d881bb.

Task-number: QTBUG-122827
Pick-to: 6.7
Change-Id: Icbde94097eb0b33171f18f8a30c935d0b950c545
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

src/android/jar/src/org/qtproject/qt/android/QtAccessibilityDelegate.java

@@ -353,7 +353,7 @@ class QtAccessibilityDelegate extends View.AccessibilityDelegate
         // Spit out the entire hierarchy for debugging purposes
         // dumpNodes(-1);
 
-        if (m_layout.getChildCount() == 0) {
+        if (m_layout.getChildCount() != 0) {
             int[] ids = QtNativeAccessibility.childIdListForAccessibleObject(-1);
             for (int id : ids)
                 result.addChild(m_view, id);