Replaced MauiTestUtils with DeviceRunners nuget

[jamescrosswell]

Attempting to replace our vendored in copy of the MauiTestUtis with a NuGet package reference to an evolution of that code.

Android Device Tests

Error: /usr/share/dotnet/sdk/9.0.100-rc.1.24452.12/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(495,5): error NETSDK1112: The runtime pack for Microsoft.Android.Runtime.34.android-x64 was not downloaded. Try running a NuGet restore with the RuntimeIdentifier 'android-x64'. [/home/runner/work/sentry-dotnet/sentry-dotnet/test/Sentry.Maui.Device.TestApp/Sentry.Maui.Device.TestApp.csproj::TargetFramework=net8.0-android]

iOS Device Tests

Run timed out after 900 seconds
Application test run crashed

#skip-changelog

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Generated by 🚫 dangerJS against 905ca31

[jamescrosswell]

Replaced by:

• Replace MauiTestUtils with DeviceRunners nuget package #3628

That PR does the same but in the main branch (not the net9 branch)