A Bug with the Android Back Button in 9.x.x versions

[abdelrahman-ali-intact]

Description

The back button in Android doesn't trigger DispatchKeyEvent or even the OnBackPressedDispatcher if it registers a callback.

Steps to Reproduce

1. Add latest Microsoft.Maui.Controls package (9.x.x) to a new Maui Blazor project targets .net9
2. Add a new Maui page
3. Add a logic to navigate to that page

 await App.Current.Windows[0].Navigation.PushModalAsync(new NewPage1());

5. Override the DispatchKeyEvent in the MainActivity to capture the back button for example

Link to public reproduction project repository

https://github.com/abdelrahman-ali-intact/MacrosoftMauiControls9040_Test.git

Version with bug

9.0.40 SR4

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

8.0.100 SR10

Affected platforms

Android

Affected platform versions

No response

Did you find any workaround?

No

Relevant log output

[RoiChen001]

I can repro this issue at Android platform on the latest 17.14 Preview 1(9.0.40 & 9.0.10 & 9.0.0), but it used to work in 8.0.100.
8.0.100:

9.0.40 & 9.0.10 & 9.0.0:

[moljac]

I was able to reproduce.

Repro sample with net8.0 and net9.0 attached

repro-sample.zip

Possibly related:

#24557