[net11.0] Use Helix job monitor for unit tests

Move Helix completion and test-result publication into the standalone job monitor so transient Azure DevOps reporting failures do not deadletter otherwise passing work items.

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

Author: kubaflo

.config/dotnet-tools.json

@@ -16,6 +16,13 @@
       ],
       "rollForward": false
     },
+    "microsoft.dotnet.helix.jobmonitor": {
+      "version": "11.0.0-beta.26379.102",
+      "commands": [
+        "dotnet-helix-job-monitor"
+      ],
+      "rollForward": false
+    },
     "api-tools": {
       "version": "1.3.5",
       "commands": [

eng/pipelines/arcade/stage-helix-tests.yml

@@ -91,9 +91,15 @@ stages:
               DOTNET_TOKEN: $(dotnetbuilds-internal-container-read-token)
               PRIVATE_BUILD: $(PrivateBuild)
 
-          - script: $(_msbuildCommand) "${{ parameters.helixProject }}" -warnAsError 0 -restore /p:Configuration=${{ BuildConfiguration }} /p:HelixInternal="${{ parameters.helixInternal }}" /p:TestRunNameSuffix="_${{ BuildConfiguration }}" /p:SkipInitInternalTooling=true /bl:$(Build.Arcade.LogsPath)${{ BuildConfiguration }}/helix_tests.binlog ${{ parameters.extraHelixArguments }}
+          - script: $(_msbuildCommand) "${{ parameters.helixProject }}" -warnAsError 0 -restore /p:Configuration=${{ BuildConfiguration }} /p:EnableHelixJobMonitor=true /p:HelixInternal="${{ parameters.helixInternal }}" /p:TestRunNameSuffix="_${{ BuildConfiguration }}" /p:SkipInitInternalTooling=true /bl:$(Build.Arcade.LogsPath)${{ BuildConfiguration }}/helix_tests.binlog ${{ parameters.extraHelixArguments }}
             displayName: Run Helix Tests
             env:
-              SYSTEM_ACCESSTOKEN: $(System.AccessToken) # We need to set this env var to publish helix results to Azure Dev Ops
+              SYSTEM_ACCESSTOKEN: $(System.AccessToken)
               HelixAccessToken: ${{ parameters.HelixAccessToken }}
-    
+
+  - template: /eng/common/core-templates/job/helix-job-monitor.yml
+    parameters:
+      timeoutInMinutes: 360
+      organization: dotnet
+      repository: maui
+      helixAccessToken: ${{ parameters.HelixAccessToken }}