Fix Helix run (#19175)

.azure/pipelines/helix-test.yml

@@ -11,6 +11,14 @@ pr:
     include:
     - '*'
 
+variables:
+- ${{ if ne(variables['System.TeamProject'], 'internal') }}:
+  - name: _UseHelixOpenQueues
+    value: 'true'
+- ${{ if eq(variables['System.TeamProject'], 'internal') }}:
+  - name: _UseHelixOpenQueues
+    value: 'false'
+
 jobs:
 - template: jobs/default-build.yml
   parameters:

eng/scripts/RunHelix.ps1

@@ -38,4 +38,4 @@ $env:BUILD_REPOSITORY_NAME="aspnetcore"
 $env:SYSTEM_TEAMPROJECT="aspnetcore"
 
 $HelixQueues = $HelixQueues -replace ";", "%3B"
-dotnet msbuild $Project /t:Helix /p:IsRequiredCheck=true /p:IsHelixDaily=true /p:HelixTargetQueues=$HelixQueues /p:RunQuarantinedTests=$RunQuarantinedTests
+dotnet msbuild $Project /t:Helix /p:IsRequiredCheck=true /p:IsHelixDaily=true /p:HelixTargetQueues=$HelixQueues /p:RunQuarantinedTests=$RunQuarantinedTests /p:_UseHelixOpenQueues=true