qtquickview_java and _kotlin example QML Button signal disconnect doesn't work

Steps to reproduce:

1. Build either qtquickview_java or qtquickview_kotlin (the multiview version)
2. Click on the "QML Button signal disconnect" button
3. Click on the upper "CHANGE COLOR" button

Expected:

    Color doesn't change

Actual:

    Color changes

This is because both QMLContents get statusChangeListeners:

m_firstQmlContent.setStatusChangeListener(this)
m_secondQmlContent.setStatusChangeListener(this)

...and onStatusChanged gets executed twice - on both times we make a connection to the First QML Views onClicked() signal and after that nothing can be done to disconnect the first one.

You can also see this when clicking on the "CHANGE COLOR" button once:

2025-02-04 14:05:28.090  5516-5516  myTag                   com.example.qtquickview_kotlin       I  QML button clicked
2025-02-04 14:05:28.091  5516-5516  myTag                   com.example.qtquickview_kotlin       I  QML button clicked

Both listeners log the click.