Split screen action doesn't work anymore in Android 13+

[micku7zu]

Issue description

Global system action not supported

Split screen action doesn't work or can't be selected. It worked before in Android 12 or older versions.

Unfortunately, there is no solution for this issue ☹️. The Global Action Split Screen was removed from Android 13 by Google and they won't add it back.

• Issue raised on Android issue tracker here: https://issuetracker.google.com/issues/225186417.
  Star the issue and maybe they will change their mind

• The commit from 2021 December 02 in Android source code that removed this function can be seen here: https://android.googlesource.com/platform/frameworks/base/+/1ad80ead9205e5a6dd54d6de6706b865f496b803%5E%21. The commit description is:

  Document the split-screen action
  The split-screen behavior is changed, so systemui doesn't
  support this action with a single activity. We don't handle
  this action by default from sc-v2. If SystemUI has any behavior
  changed, they could register this action to support it.

  The action for GLOBAL_ACTION_TOGGLE_SPLIT_SCREEN was removed from AOSP Android 13. Other manufacturers might implement this functionality back.

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GLOBAL_ACTION_TOGGLE_SPLIT_SCREEN doesn't work anymore in Android 13+.