AnimationNodeStateMachineTransition "at end" transition on looping animations

**Your Godot version:**
4.1.1

**Issue description:**
One thing I am struggeling to understand myself as a new Godot user that would be awesome to add to the docs is if the `SWITCH_MODE_AT_END` `SwitchMode` of the `AnimationNodeStateMachineTransition` is also happening when the current animation is looping, or if in that case the transition is not triggered.
In the docs it says _Wait for the current state playback to end, then switch to the beginning of the next state animation_ so I guess that means even for a looping animation "at end" transitions should be triggered, but that is actually not happening for me in the engine, so maybe that should be mentioned in the docs somehow...

**URL to the documentation page (if already existing):**
https://docs.godotengine.org/en/4.1/classes/class_animationnodestatemachinetransition.html#enumerations