Fix runtime-official when executed against PRs in azdo (#65034)

Author: safern

eng/pipelines/runtime-official.yml

@@ -392,7 +392,7 @@ stages:
       jobParameters:
         isOfficialBuild: ${{ variables.isOfficialBuild }}
         liveRuntimeBuildConfig: release
-        liveLibrariesBuildConfig: ${{ variables.debugOnPrReleaseOnRolling }}
+        liveLibrariesBuildConfig: Release
         pgoType: 'PGO'
       platforms:
       - windows_x64