VxToast positioning when using a BottomNavigationBar and GoRouter

[baconomist]

Describe the bug
When showing a toast with VxToastPosition.bottom, the toast gets hidden by the navbar.

To Reproduce
Steps to reproduce the behavior:

1. Setup go router with a shell route to render a navbar overtop of each page
2. Try showing a VxToast with the VxToastPosition.bottom

Expected behavior
The VxToast to appear on top of the navbar

Screenshots
Toast(red) can be seen hidden by the navbar:

[iampawan]

Can you also give a reproducible minimal code?