Clear media database : on-boarding should be relaunch after this action

Description

The Clear Media Database action in the settings (Settings > Advanced) is useful because it clears all the medialibrary, keeping all the settings defined by the user.

But :

• No information is displayed to the user to confirm the success
• you have to restart the app manually and no default folders are selected for the medialibrary so that can be confusing for users

Expected behavior

After the action, we should restart the app and launch the on-boarding.

Moreover, we should have a direct access to this Android Clear Data view, as we had some time ago :

This is available from the Android Info app view but it's sometimes hard for a user to access it, depending of your Android Retailer version (it's very hard with a huawei phone for example)