Enable CoreCLR Apple template tests

[kotlarmilos]

Description

This PR enables CoreCLR Apple template tests on Helix, mirroring the existing Android CoreCLR tests implementation.

Contributes to dotnet/runtime#120056

[Copilot]

Pull request overview

This PR enables CoreCLR Apple template tests on Helix for iOS simulator, adding test coverage for the CoreCLR runtime variant alongside existing Mono and NativeAOT tests. This work contributes to runtime issue #120056 by providing integration test validation for CoreCLR on Apple platforms.

Key Changes:

• Adds CoreCLR to the RuntimeVariant enum
• Introduces CoreCLR test cases for both "maui" and "maui-blazor" templates in Debug and Release configurations
• Configures CoreCLR builds with the UseMonoRuntime=false property
• Enhances pipeline test result reporting with explicit error handling configuration

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/TestUtils/src/Microsoft.Maui.IntegrationTests/BaseBuildTest.cs	Adds CoreCLR enum value to RuntimeVariant enum for distinguishing CoreCLR runtime tests
src/TestUtils/src/Microsoft.Maui.IntegrationTests/AppleTemplateTests.cs	Adds four new test cases for CoreCLR runtime (Debug/Release for maui and maui-blazor templates) and implements CoreCLR build configuration by setting UseMonoRuntime=false
eng/pipelines/arcade/stage-integration-tests.yml	Explicitly configures error handling with continueOnError: false and failTaskOnFailedTests: true to ensure test failures are properly reported

[rmarinho]

/rebase

[rmarinho]

/rebase

[kotlarmilos]

Tests are passing. Maccatalyst test is failing due to a version mismatch: object built for 15.2 but linked against 15.0

[github-actions]

🚀 Dogfood this PR with:

⚠️ WARNING: Do not do this without first carefully reviewing the code of this PR to satisfy yourself it is safe.

curl -fsSL https://raw.githubusercontent.com/dotnet/maui/main/eng/scripts/get-maui-pr.sh | bash -s -- 33231

Or

• Run remotely in PowerShell:

iex "& { $(irm https://raw.githubusercontent.com/dotnet/maui/main/eng/scripts/get-maui-pr.ps1) } 33231"

[rolfbjarne]

/azp run maui-pr-devicetests,maui-pr-uitests

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[kotlarmilos]

The template tests are passing. The device tests are failing due to missing debug libraries in Release build. It seems that CoreCLR has hard load-time dependency even they are not being used.

Tracked in dotnet/macios#24849

[kotlarmilos]

It seems that the template tests have passed on CoreCLR

/cc: @rolfbjarne @PureWeen

[rolfbjarne]

/azp run maui-pr-uitests,maui-pr-devicetests

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[kotlarmilos]

iOS tests passed. Maccatalyst tests are timing out, let's rerun the job

[rolfbjarne]

This looks good to me, but someone else more familiar with the codebase should also approve.

[kubaflo]

/azp run maui-pr-uitests,maui-pr-devicetests

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[kotlarmilos]

Maccatalyst UI tests are pre-existing and unrelated