Fix Any state transitions will be created from SSMs:

- Due to an implementation error, creating Any state transitions previously did not have any effect in the graph.
- This now creates Any state from the root machine.
- Sub-state machines "cannot" have Any state transitions created directly from them.
- Internally, Any always comes from the root state machine, but visually in the graph, it will come from the sub-state machine.

Packages/dev.hai-vr.animator-as-code.v1/V1/Editor/AacAnimatorNode.cs

@@ -23,6 +23,14 @@ namespace AnimatorAsCode.V1
             AnimatorRoot = animatorRoot;
         }
 
+        internal AacFlStateMachine RootMachine()
+        {
+            if (ParentMachine != null) return ParentMachine.RootMachine();
+            if (this is AacFlStateMachine root)
+                return root;
+            return null;
+        }
+
         /// Move the node the left of the other node in the graph.
         public TNode LeftOf(AacAnimatorNode otherNode) => MoveNextTo(otherNode, -1, 0);