Android app - Using the physical device's Back button could cause some confusion

[pcenov]

Observed behavior

There are multiple occasions in which using the Back button of the Android device can cause some confusion in the user. Here's a clear example where after completing the 'Own my own' flow the user can click the back button and get into a confusing situation like not being sure whether the Setup Wizard was completed or not (in the video I am clicking the Back button of the DevTools window but it's the same when clicking the actual Back button on the device) :

https://github.com/learningequality/kolibri/assets/79847249/4b02dd04-069f-400c-96a3-a8578ebd9cf3

Expected behavior

To be further discussed.

Steps to reproduce the issue

1. Install the latest Beta 13 Android app.
2. Go through 'On my own' and click the Back button
3. A similar confusing behavior can be observed in other scenarios when clicking the Back button while using the app.

Usage Details

Beta 13 Ubuntu 22 - Chrome Samsung Note 10 Lite, Android 13

[pcenov]

@radinamatic