OnEditorCameraMoved delegate not firing in the Animation Viewport

Found in 4.22 CL#6574378

Reproduced in 4.21 CL#4753647, 4.24 Main CL#7062442

The OnEditorCameraMoved delegate does not fire in the Animation Viewport. The example project provided by the user is attached.

1. Add UnrealEd as a public dependency module in your Build.cs file.
2. Subscribe a function to the OnEditorCameraMoved delegate that prints a message to the Output Log.
3. Open the Animation Viewport (via an animation sequence).
4. Move the camera around the Animation Viewport.
5. Check the output log to see the message didn't print.
6. Check the Output Log to verify that the delegate didn't fire.

Result: The OnEditorCameraMoved delegate does not fire in the Animation Viewport when the camera moves.

Expected: The OnEditorCameraMoved delegate fires in the Animation Viewport when the camera moves.