Fix E2E Forge heading selectors and test-suite npm arg shadowing

scripts/test-suite.ps1

@@ -25,15 +25,15 @@ function Write-Phase([string]$Name) {
     Write-Host "==============================================================" -ForegroundColor Cyan
 }
 
-function Invoke-Npm([string[]]$Args) {
+function Invoke-Npm([string[]]$NpmArgs) {
     $prevEAP = $ErrorActionPreference
     $ErrorActionPreference = 'Continue'
     try {
-        $out = & npm @Args 2>&1 | ForEach-Object { "$_" }
+        $out = & npm @NpmArgs 2>&1 | ForEach-Object { "$_" }
         $text = ($out -join "`n").Trim()
         if ($text) { Write-Host $text }
         if (-not $LASTEXITCODE -or $LASTEXITCODE -eq 0) { return }
-        throw "npm $($Args -join ' ') failed (exit $LASTEXITCODE)"
+        throw "npm $($NpmArgs -join ' ') failed (exit $LASTEXITCODE)"
     } finally {
         $ErrorActionPreference = $prevEAP
     }