Swipe back navigation overrides ActionBar styles (iOS) #7430

Environment

• NativeScript Playground
• iOS

Describe the bug
Navigating back on iOS via the default swipe back navigation removes all ActionBar styles to the default iOS style. And if the swipe back navigation event is started but not completed the styles remain changed.

To Reproduce / Sample project
See Playground

Expected behavior
ActionBar styles of the navigating page are not overridden.

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