Fix issue with BuildSnippets always running on pullrequest (Azure#48811)

* we need to pass the snippets through to the analyze job in PR context

Author: scbedd

eng/pipelines/templates/jobs/ci.yml

@@ -70,6 +70,7 @@ jobs:
           SDKType: ${{ parameters.SDKType }}
           CheckAOTCompat: ${{ parameters.CheckAOTCompat }}
           AOTTestInputs: ${{ parameters.AOTTestInputs }}
+          BuildSnippets: ${{ parameters.BuildSnippets }}
         PreGenerationSteps:
           - template: /eng/pipelines/templates/steps/pr-matrix-presteps.yml
             parameters: