[Bug]: Bottom Bar Item is not highlighted in search

[JohannesPtaszyk]

Is there an existing issue for this?

• I have searched the existing issues

Is there a StackOverflow question about this issue?

• I have searched StackOverflow

What happened?

When opening the search from any backstack, the highlighting of the navigation bar items is gone.

This issue is caused by usage of Destination.hierarchy for highlighting the bottom items.
Currently there is a Library-Restricted field NavHost.currentBackStack, which could be used instead.
Other than that highlighting of global destinations is not really possible, as far as I tried it.

I also found additional sources here:
https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:navigation/navigation-runtime/src/main/java/androidx/navigation/NavController.kt;drc=a35c4229c9b7643b15fcd5ddd0d81a7d9abbba4f;l=114

https://issuetracker.google.com/issues/308334893

I also already pinged Ian Lake, to get some answers on why this field is not public API and what would be his suggestion.
https://twitter.com/JPtaszyk/status/1777602817336684829

Relevant logcat output

No response

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