Nested QML items with accessibility info within another item with accessibility info does not show up in the accessibility hierarchy on Android.

See the output of Appium Inspector for a failing case below:

If the `Accessible.name` is removed from the nesting/parent element, the nested/child accessibility element `rect_inside_center` shows up in the Appium Inspector:

There is a minimal reproducer in the attached zip archive: NestedAccessibleItemsIssue.zip

An educated guess is that this was introduced in this commit:
https://codereview.qt-project.org/c/qt/qtbase/+/325940 

See the removal of addChild calls at line 339 here:
https://codereview.qt-project.org/c/qt/qtbase/+/325940/3/src/android/jar/src/org/qtproject/qt5/android/accessibility/QtAccessibilityDelegate.java#b339

(I have not tried to reintroduce the addChild code and compile Qt, so this is speculation.)

On iOS this is not an issue. (Tested.)