[CI] Bring needed changes in the CI from main.

Author: mandel-macaque

tools/devops/automation/templates/build/build.yml

@@ -159,8 +159,14 @@ steps:
     AUTH_TOKEN_VSENG_XAMARIN_MAC_DEVICES_P12: ${{ parameters.xqaCertPass }}
     AUTH_TOKEN_VSENG_XAMARIN_MAC_DEVICES_2_P12: ${{ parameters.xqaCertPass }}
 
-- bash: $(Build.SourcesDirectory)/xamarin-macios/system-dependencies.sh --provision-simulators --ignore-shellcheck --ignore-yamllint
-  displayName: 'Provision simulators'
+# only install all the simulators when working on a PR, EO machines do not allow use to perform this step 
+- ${{ if parameters.isPR }}:
+  - bash: $(Build.SourcesDirectory)/xamarin-macios/system-dependencies.sh --provision-simulators --ignore-shellcheck --ignore-yamllint
+    displayName: 'Provision simulators'
+- ${{ else }}:
+  - bash: |
+      xcodebuild -downloadPlatform iOS
+    displayName: 'Provision simulators'
 
 # downloding mono takes time and has been shown to be problematic when we have network issues. This is why we 
 # are using the cache. Mono does not get bump a lot of times if any (after dotnet)