[BUG] Snackbar hidden behind Taskbar on Android Tablets

[Felicity-R]

Is there an existing issue for this?

• I have searched the existing issues

Did you read the "Reporting a bug" section on Contributing file?

• I have read the "Reporting a bug" section on Contributing file: https://github.com/CommunityToolkit/Maui/blob/main/CONTRIBUTING.md#reporting-a-bug

Current Behavior

When a modal window is displayed, and there's a visible taskbar but no navigation bar (i.e. the navigation mode is gesture instead of buttons), the snackbar appears behind the Taskbar's app icons:

If you do have the Navigation Bar buttons on, then it correctly accounts for the Navigation Bar height and looks fine:

It's just the TaskBar that isn't being accounted for.

Expected Behavior

Snackbar shouldn't be obscured.

Steps To Reproduce

1. On an Android tablet that supports a Taskbar, configure your device settings so that a) the Taskbar is on and b) the Navigation Bar is set to use gestures instead of buttons.

Set up an app that displays a modal window, and then shows a snackbar while the modal is active. In the scenario where there's no modal it seems to work fine.
Sample code here: https://github.com/Felicity-R/SnackbarSample
2. Click the button on the first page to open the modal
3. Click the button in the modal to display the snackbar.

Link to public reproduction project repository

https://github.com/Felicity-R/SnackbarSample

Environment

- .NET MAUI CommunityToolkit: 9.0.2
- OS: Android Galaxy Tab S7, running Android 13
- .NET MAUI: 8.0.70

Anything else?

No response