Reproduction steps:
1. Download the attached user's project "switchPlatform.zip"
2. Run "{path to Unity} -batchmode -nographics -quit -buildTarget Android -projectPath {project path} -executeMethod SwitchPlatformTest.LogSomething" in the Windows Command Prompt
3. Inspect the Editor log

Expected result: when running Unity in batchmode with the -buildTarget argument, Editor Log "LogSomething" is being correctly logged, but not the one in OnActiveBuildTargetChanged
Actual result: when running Unity in batchmode with the -buildTarget argument, IActiveBuildTargetChanged.OnActiveBuildTargetChanged is not called.

Reproduces on: 2019.4.29f1, 2020.3.14f1, 2021.1.14f1, 2021.2.0b3, 2022.1.0a2

Notes:
-Observe the message in the Editor Log "LogSomething" being correctly logged, but not the one in OnActiveBuildTargetChanged
-From the user's information, this is also reproducible on macOS
-SwitchPlatformTest.cs
public static void LogSomething()
{
Debug.Log("###LOG: Here's something to log: *Something*");
}
public int callbackOrder => 0;
public void OnActiveBuildTargetChanged(BuildTarget previousTarget, BuildTarget newTarget)
{
Debug.Log($"###LOG: ActiveBuildTargetChanged called from {previousTarget} to {newTarget}");
}