Add logic to detect msix installation errors (#11496)

triage/config.yml

@@ -135,7 +135,6 @@ rules:
         capture:
           field3: error
 
-      
     - logline:
         provider: Microsoft.Windows.Hyper.V.NetMgmt
         task: NetMgmt::CreateVirtualSwitch
@@ -174,6 +173,15 @@ rules:
       set: wsl-client-logs
       oneshot: true
 
+    - logline:
+        provider: Microsoft.Windows.Subsystem.Lxss
+        field8: {regex: ".*InstallMsix\\(.*"}
+      set:
+        name: msix-install-error
+        capture:
+            field7: error
+      oneshot: true
+
 actions:
     - foreach:
         var: user-visible-error
@@ -258,3 +266,8 @@ actions:
         user_message: 'It appears that the VirtualMachinePlatform optional component is not enabled. Please try running: `dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart`, then reboot and see if that solves the issue.'
         skip_similar_issues: false
         tag: 'needs-author-feedback'
+
+    - when:
+        condition: msix-install-error
+        debug_message: 'Found evidence of MSIX install error: $error, adding msix tag'
+        tag: 'msix'