Tests with KViewPager/KViewPager2 SwipeableActions methods are flaky

[Audrius Karosevicius]

Steps to reproduce:

(It's hard to reproduce. We are having like 1 flaky test in 10k runs)

1. Use any of SwipeableActions interface methods on ViewPager/ViewPager2
2. Assert that child of ViewPager is completely displayed.

Observed Results:

Current page of ViewPager is not fully settled after end of SwipeableActions

Expected Results:

Assertions can be made immediately after swipe action

Relevant Code:

viewPager.swipeLeft()
someChild.isCompletelyDisplayed()

PR with reproduction on Sample App

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