Fixed NavigationPage TitleBar visibility issue when set to the parent page #25000
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Root Cause
The NavigationBar stayed visible because only the current page's HasNavigationBar property was checked, ignoring the parent page's setting when it was false.
Description of Change
The fix now checks both the parent and current page’s HasNavigationBar property. This ensures the NavigationBar is hidden when either the parent or current page has HasNavigationBar set to false.
Issues Fixed
Fixes #13807
Fixes #16816
Tested the behaviour in the following platforms
Screenshots
Before
After