Java.Lang.ClassNotFoundException after upgrading to version 9.0.8 and only in release
## 🐛 Bug Report

Our app worked like a charm in version 8. We upgraded it to 9.0.8 version. It has been working fine all tests in debug mode but when we moved it to release, we get:

`Java.Lang.ClassNotFoundException: android.view.MvxEmptyRecyclerView`

`MvxEmptyRecyclerView` is a class derived from `MvxRecyclerView`

The thing is that it has been working fine in mvvmcross 6, 7 and 8. In version 9, only works in debug mode, not in release.



**Platform:** 
- [ ] :iphone: iOS
- [x] :robot: Android
- [ ] :checkered_flag: WPF
- [ ] :earth_americas: UWP
- [ ] :apple: MacOS
- [ ] :tv: tvOS
- [ ] :monkey: Xamarin.Forms
