[AI] StateTree fails to compile after copy/pasting a state with a task that binds to required event on the state's enter conditions

StateTree appears to keep an incorrect reference to the event from the source tree rather than re-establishing the property binding to the new tree's event. This happens when copy/paste of the state as above or if you duplicate the entire StateTree asset and attempt to compile it.

1. Create a StateTree using either component schema (StateTree_A)
2. Add a state to the tree with a required event in the enter condition
   1. Required Event to Enter: True
   2. Payload Struct: Vector
   3. Consume Event on Select: True
3. Add a Delay task to the state
4. Bind one or more of the Delay task's float properties to the Payload Vector's members
5. Compile and save asset
6. Create a new StateTree (StateTree_B)
7. Copy the state with the required event and task bound to it in StateTree_A
8. Paste the state into the StateTree_B
9. Compile StateTree_B

Expected Result: StateTree_B compiles successfully.

Actual Result: Compilation fails with an error for "Failed to find binding source property 'Payload.X' for target Task"