Test Case:
Native + Banner, Muiti-size (300x250, 300x600), GDN Creative
Network Native Backfill is disabled
Expected:
Creative: Banner Ad returns (300x600)
Presentation: None (300x250 should be filtered out)
Native + Banner, Muiti-size (300x250, 300x600), GDN Creative
Network Native Backfill is disabled
Expected:
Creative: Banner Ad returns (300x600)
Presentation: None (300x250 should be filtered out)