refactor(windows): ensure output redirection for Invoke-LxsSibling and Invoke-LxsScript

windows/lib/common.ps1

@@ -745,7 +745,10 @@ function Invoke-LxsSibling {
     $local = Join-Path $SelfDirectory $name
     if (Test-Path $local) {
         $global:LASTEXITCODE = 0
-        & $local @Arguments
+        # Out-Host, not a bare call: anything the child writes to the success
+        # stream (native command output, for one) would otherwise be collected
+        # into this function's return value alongside the exit code.
+        & $local @Arguments | Out-Host
         return $LASTEXITCODE
     }
 
@@ -765,7 +768,7 @@ function Invoke-LxsSibling {
     Write-LxsOk 'Payload acquired'
     try {
         $global:LASTEXITCODE = 0
-        & $temp @Arguments
+        & $temp @Arguments | Out-Host
         return $LASTEXITCODE
     } finally {
         Remove-Item $temp -Force -ErrorAction SilentlyContinue