というか公式に振動の解説あったわ。
https://docs.unity3d.com/Packages/com.unity.inputsystem@1.0/manual/Gamepad.html
> PS4, Xbox, and Switch controllers, when connected to their respective consoles.
> Only supported if you install console-specific input packages in your Project.
> PS4 controllers, when connected to Mac or Windows/UWP computers.
> Xbox controllers on Windows.

InputSystem の Rumble が Android に対応していない…