[ci] Add MAUI full R2R android-arm Helix test (#12020)

## Summary
- build the MAUI template with CoreCLR full ReadyToRun for android-arm
- set _MauiPublishReadyToRunPartial=false and assert no partial R2R inputs remain
- run the APK on the windows.11.amd64.android-armel.open Helix queue

Closes #12026

## Validation
- parsed edited YAML files
- git diff --check

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: simonrozsival <374616+simonrozsival@users.noreply.github.com>

Author: simonrozsival

build-tools/automation/MauiR2RHelix.proj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.DotNet.Helix.Sdk" DefaultTargets="Test">
+  <PropertyGroup>
+    <Language>msbuild</Language>
+    <EnableAzurePipelinesReporter Condition="'$(SYSTEM_ACCESSTOKEN)' != ''">true</EnableAzurePipelinesReporter>
+    <EnableAzurePipelinesReporter Condition="'$(SYSTEM_ACCESSTOKEN)' == ''">false</EnableAzurePipelinesReporter>
+    <FailOnTestFailure>true</FailOnTestFailure>
+    <HelixType Condition="'$(HelixType)' == ''">tests/android/maui-r2r/</HelixType>
+    <HelixWorkItemName Condition="'$(HelixWorkItemName)' == ''">WorkItem</HelixWorkItemName>
+    <HelixTestRunName Condition="'$(HelixTestRunName)' == ''">$(HelixWorkItemName)</HelixTestRunName>
+    <HelixResultsDestinationDir Condition="'$(HelixResultsDestinationDir)' == '' and '$(BUILD_STAGINGDIRECTORY)' != ''">$(BUILD_STAGINGDIRECTORY)\helix-results\$(HelixWorkItemName)</HelixResultsDestinationDir>
+    <HelixResultsDestinationDir Condition="'$(HelixResultsDestinationDir)' == ''">$(MSBuildThisFileDirectory)..\..\artifacts\helix-results\$(HelixWorkItemName)</HelixResultsDestinationDir>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <HelixTargetQueue Include="$(HelixTargetQueueForItem)">
+      <TestRunName>$(HelixTestRunName)</TestRunName>
+    </HelixTargetQueue>
+  </ItemGroup>
+
+  <ItemGroup>
+    <HelixWorkItem Include="$(HelixWorkItemName)" Condition="'$(WorkItemDirectory)' != ''">
+      <PayloadDirectory>$(WorkItemDirectory)</PayloadDirectory>
+      <Command>$(WorkItemCommand)</Command>
+      <Timeout Condition="'$(WorkItemTimeout)' != ''">$(WorkItemTimeout)</Timeout>
+    </HelixWorkItem>
+  </ItemGroup>
+</Project>

build-tools/automation/azure-pipelines-public.yaml

@@ -620,6 +620,13 @@ stages:
         xaSourcePath: $(Build.SourcesDirectory)/android
         displayName: Build MAUI template - Release
 
+    - template: /build-tools/automation/yaml-templates/run-maui-r2r-helix-matrix.yaml
+      parameters:
+        project: $(Build.StagingDirectory)/MauiTestProj/MauiTestProj.csproj
+        xaSourcePath: $(Build.SourcesDirectory)/android
+        logsDirectory: $(Build.StagingDirectory)/logs
+        extraBuildArguments: --configfile $(Build.SourcesDirectory)/maui/NuGet.config
+
     - task: CopyFiles@2
       displayName: copy build logs
       condition: always()

build-tools/automation/azure-pipelines.yaml

@@ -236,6 +236,13 @@ extends:
             xaSourcePath: $(Build.SourcesDirectory)/android
             displayName: Build MAUI template - Release
 
+        - template: /build-tools/automation/yaml-templates/run-maui-r2r-helix-matrix.yaml@self
+          parameters:
+            project: $(Build.StagingDirectory)/MauiTestProj/MauiTestProj.csproj
+            xaSourcePath: $(Build.SourcesDirectory)/android
+            logsDirectory: $(Build.StagingDirectory)/logs
+            extraBuildArguments: --configfile $(Build.SourcesDirectory)/maui/NuGet.config
+
         - task: CopyFiles@2
           displayName: copy build logs
           condition: always()