Configuration option to disable automatic startup at boot is not honoured.

### Your use case

#### What would you like to do?

Be able to stop the Android "Element" app from automatically starting up when Android starts up.

#### Why would you like to do it?

It is very annoying that whenever I start up my android device, the SchildiChat which I have installed there does automatically start up although I do not want to use it in that session.

#### How would you like to achieve it?

It is very annoying that whenever I start up my android device, the SchildiChat which I have installed there does automatically start up although I do not want to use it in that session.

### Have you considered any alternatives?

* I have checked that "Settings" → "Notifications" → "Start on boot" is set to disabled, but the app still starts up after boot which I see by a notification when new messages have arrived. (And I _do not_ want to disable notification if the app has been started (in fact I want them in case I have started the app manually), but I want to disable autostart of the app at all.)

* I have tried the [App "Autostarts"](https://f-droid.org/en/packages/com.elsdoerfer.android.autostarts/) and disabled there that SchildiChat should start up on System Startup, but that setting always gets reset to enabled.

### System information

Android 11 (in detail: "[crDroid](https://github.com/ShihabZzz/Releases/releases)" (a Google-free operating system), version string as from the ZIP file: `11.0-20210522-markw-v7.6`).