Site Permission Shortcut

I have an webapp which is integrated as Trusted Web Activity using browser helper

## Problem
The webapp uses camera permission to take picture.
If by mistake the user denies the permission there is no easy was to redirect user to give this permission again.
If the it was in browser or Chrome custom tab we suggest user to access site permission from Nav bar. But this is an issue on TWA as their is no nav bar.
Looks like

**Describe the solution you'd like**
Give option for the webapp to toggle nav bar if needed.

**Describe alternatives you've considered**
Tried if we can deeplink into site settings but looks like its not possible