`urllib.request.getproxies_registry` does not return proxy exceptions (no_proxy)

Bug report

Bug description:

On Windows

https://github.com/python/cpython/blob/b7a95dfee30aae171de47f98ed3b7d1cc08e5bd4/Lib/urllib/request.py#L2726-L2733

getproxies_environment() gets the proxy servers from environment variables HTTP_PROXY, HTTPS_PROXY, etc. and the proxy exceptions from NO_PROXY, returns a dict like {'http': '<URL>', 'no': '<FQDNs>'}; but getproxies_registry() gets only the proxy servers from Registry, returns a dict like {'http': '<URL>'}. These two ways to get proxies are inconsistent, a Windows user will get a proxy dict without exceptions list if he configures proxies in Settings or Internet Options (Registry).

CPython versions tested on:

CPython main branch

Operating systems tested on:

Windows

從 Lib/urllib/request.py 中參照的 getproxies_registry() 行開始，然後將其結果與 getproxies_environment() 進行比較，尤其是 no_proxy 項目。重現 issue 中描述的 Windows Registry Proxy 設定，並驗證 getproxies_registry() 回傳的 Proxy 例外與以環境為基礎的路徑保持一致。