Fix buildArgs, publishArgs in public (#54750)

Author: wtgodbe

.azure/pipelines/ci-public.yml

@@ -50,11 +50,10 @@ variables:
     value: true
 - name: _UseHelixOpenQueues
   value: ${{ ne(variables['System.TeamProject'], 'internal') }}
-- ${{ if in(variables['Build.Reason'], 'PullRequest') }}:
-  - name: _BuildArgs
-    value: '/p:SkipTestBuild=true /p:PostBuildSign=$(PostBuildSign)'
-  - name: _PublishArgs
-    value: ''
+- name: _BuildArgs
+  value: '/p:SkipTestBuild=true /p:PostBuildSign=$(PostBuildSign)'
+- name: _PublishArgs
+  value: ''
 # Write binary logs for all main Windows build steps except the x86 one in public and PR builds.
 - name: WindowsArm64LogArgs
   value: /bl:artifacts/log/Release/Build.arm64.binlog