Add staging block that copies udc_webserver_settings.json from the enrollment
share to C:\ProgramData\UDC during preinstall, mirroring the existing
udc_settings.json pattern. New PCs were imaging without UDC web server
config because the file was never wired into the imaging flow (only the
remote-maintenance task in powershell/remote-execution touched it).
Also folds in two prior uncommitted hardening blocks in the same script:
firewall NotifyOnListen=False (suppress Oracle OUI's listen-port prompt)
and NetFx3 pre-enable (Oracle 11.2's welcome path needs .NET 3.5).
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