Adding on success animation in touchpad tutorial

Switching to another lottie animation when gesture is done successfully.
Also updating basic animation with minor improvements (no background color, fixed arrow color).

Bug: 346579074
Test: Open back gesture screen, do back gesture and see success animation playing once
Flag: com.android.systemui.shared.new_touchpad_gestures_tutorial
Change-Id: I8a60ee037b58fee02b32b21ca3c85e62ebec4802