AnimGraph Editor - deleting a transition with multiple transitions.

[Maksims]

When you have multiple transitions on same path, deleting a single transition leads to issues.

Steps to Reproduce

1. Create Anim State Graph
2. Open Graph Editor
3. Add new State
4. Add transition from Initial state to the New state
5. Select created transition (by clicking arrow between nodes in graph)
6. Hit "New Transition" in the inspector to insert a second transition
7. Delete second transition by clicking "bucket" symbol in inspector

Issue:

Transition link deselects, and is not selectable again.

Workaround:

Close graph editor, and open again

Expected results:

Transition to be deleted without deselecting a link

Also note if bug is replicated (do not refresh the Editor), then you can delete the state, create a new one and add transitions, and repeat this process - you will get exceptions in Console.