Proposal: Add windowOptOutEdgeToEdgeEnforcement option

In AndroidManifest.xml providing an option for short term till this behavior is completely enforced.

Activity level
```xml
<activity
    android:name="org.kivy.android.PythonActivity"
    android:windowOptOutEdgeToEdgeEnforcement="true"
    ...>
</activity>
```

Application level

```xml
<application
    android:windowOptOutEdgeToEdgeEnforcement="true"
    ...>
    ...
</application>
```