Video rewarded skip button problem

[MaksPetrukhnoPI]

Problem

It appears that video rewarded has skip button. Skip button should be present only in video interstitial with end cards.

[YuriyVelichkoPI]

We need some generally available UI guides for the rendering API. Where we'll describe how ads should look and behave.

And any further UI changes should be discussed by the committee first, and only then go to the codebase.

I'll create a draft issue for the policy.

[YuriyVelichkoPI]

Depends on https://github.com/prebid/prebid-mobile-ios/issues/693