[REG 6.8.1->6.9.1] Crash with enabled VoiceOver when destroying QQuickItem

Since the update to Qt 6.9.1 we are encountering a crash on iOS with VoiceOver enabled. A screenshot of the crash dump is attached.

Please find attached MWE and steps to reproduce:

1. Enable VoiceOver
2. Start MWE
3. Push new page
4. Pop page
5. Application crashes in QAccessibleCache::removeAccessibleElement

I had a look at the file's history and assume that https://codereview.qt-project.org/c/qt/qtbase/+/632596 is causing this crash.

[element release];

seems to be the issue here.

Oddly enough the same crash does not occurr on macOS even though it's the same code.