fix(windows): fix Brave policy PowerShell script

Author: rodrigo-fournier-immutable

sample/Tests/test/test_windows_helpers.py

@@ -896,7 +896,8 @@ def setup_autolaunch_protocol_policy():
         New-ItemProperty -Path $key -Name "AutoLaunchProtocolsFromOrigins" -PropertyType String -Value $json -Force | Out-Null
         Write-Host "Brave policy AutoLaunchProtocolsFromOrigins set at $key."
       }} catch {{
-        Write-Host "Failed to set policy at $key: $($_.Exception.Message)"
+        # NOTE: avoid "$key:" which PowerShell parses as a drive reference.
+        Write-Host ("Failed to set policy at {0}: {1}" -f $key, $_.Exception.Message)
       }}
     }}
     '''