fix: [iPadOS 18] Disable the new UITabBarController view style in iPadOS 18

[maheshwaripurvesh]

Description

Since iPadOS 18, the Bottom Tab Bar on iPads is now positioned at the top of the screen, floating over the content, instead of at the bottom. This may be the feature by Apple in new version however creating poor user experience

Fix

1. Check the ios18 and iPad variant
2. If above condition statisfy, apply following

   .traitOverrides.horizontalSizeClass = UIUserInterfaceSizeClassUnspecified;

This will disable the new UITabBarController view style in iPadOS 18

References

Announcement: https://developer.apple.com/design/human-interface-guidelines/tab-bars#iPadOS

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[aschmitz-wbd]

There is an issue #7926 for that and I want to mention here, that I think it should just be disabled outright. Since it's the native behavior of the iPad, there should at least be an option to turn it off and not have it disabled in all cases.