How to set the Android window to transparent?

Godot Version

4.2

Question

I have set the background to transparent in the project settings, and it is also transparent on Desktop(Windows). However, after packaging it into an Android app, the background is black. I have also set the transparent theme for Android.

<style name="GodotAppMainTheme" parent="@android:style/Theme.Translucent.NoTitleBar.Fullscreen"/>

<style name="GodotAppSplashTheme" parent="@android:style/Theme.Translucent.NoTitleBar.Fullscreen">
</style>

According to the docs window transparency is only implemented on desktop platforms so far