Focal Point is not cleared when SetFocus is used

The Focal Point that is set for an AI Controller doesn't get reset when Set Focus is used. This causes the character to turn back to the focal point if the actor that is set as the focus is destroyed.

Note: Not sure if this is actually intended but assuming that this is incorrect. If this is intended functionality, please mark as By Design.

1. Download the attached project and open it
2. Open the "Untitled" map
3. If it's not selected, choose "Current Camera Location" from the PIE settings for Spawn Player At...
4. Watch the orientation of the CharacterBP
   Result: Once the ActorBP which has been set as the focus is destroyed, the character returns to looking at the previously set focal point
   Expected: The character should continue looking at the Actor's location despite it being destroyed.