When creating BottomNavigation via code-behind, the TabStrip is not visible (but it is tappable and working - e.g., it changes the selectedIndex and the TabContentItem).

Steps to reproduce:

• Use this sample app or create a BottomNavigation dynamically
• Create and assign a TabStrip to our BottomNavigation component.

As a result, the component will show and work on Android, but on iOS it will not show the tab strip.

Related to #6967

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