Missing default Marketing Icon for iOS projects

There is no default image in the Engine for the iOS Marketing Icon.

1. Create a new Blueprint project.
2. Go to Project Settings -> Platforms -> iOS -> Required Icons -> Marketing Icon

RESULT:
There is no default image available for the Marketing Icon, as there is for all of the other icons.

EXPECTED:
There is a default image available for the Marketing Icon.

4.18.0 Release - iOS icons and Marketing Image