Run AOT CI on Ubuntu. (#4734)

.github/workflows/ci-aot.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false  # ensures the entire test matrix is run, even if one permutation fails
       matrix:
-        os: [ windows-latest ]
+        os: [ ubuntu-latest ]
         version: [ net7.0 ]
 
     runs-on: ${{ matrix.os }}

build/assert-publish-aot-testApp-warning-count.ps1

@@ -7,6 +7,7 @@ foreach ($line in $($publishOutput -split "`r`n"))
 {
     if ($line -like "*analysis warning IL*") 
     {
+        Write-Host $line
         $actualWarningCount += 1
     }
 }