Copied patch logic from dev (#7961)

Author: yojagad

azure-pipelines.yml

@@ -277,9 +277,16 @@ jobs:
       contents: '**\CodeSignSummary-*.md'
   - publish: $(Build.ArtifactStagingDirectory)\SiteExtension
     artifact: SiteExtension
+  - pwsh: |
+    if ((test-path $(Build.ArtifactStagingDirectory)\ZippedPatchSiteExtension))
+    {
+        Write-Host "Patched site extension detected."
+        Write-Host "##vso[task.setvariable variable=isPatchVersion;isOutput=true]true"
+    }
+    displayName: 'Set isPatchVersion'
   - publish: $(Build.ArtifactStagingDirectory)\ZippedPatchSiteExtension
     artifact: PatchedSiteExtension
-    condition: and(succeeded(), ne(variables['patchVersion'], '0'))
+    condition: and(succeeded(), eq(variables['isPatchVersion'], 'true'))
   - publish: $(Build.ArtifactStagingDirectory)\PrivateSiteExtension
     artifact: PrivateSiteExtension
   - publish: $(Build.ArtifactStagingDirectory)\Symbols