`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

从 Lib/urllib/request.py 中引用的 getproxies_registry() 行开始，然后将其结果与 getproxies_environment() 进行比较，尤其是 no_proxy 条目。复现 issue 中描述的 Windows Registry 代理配置，并验证 getproxies_registry() 返回的代理例外与基于环境的路径保持一致。