SOCKS proxy: `[WinError 64] The specified network name is no longer available`

When using a SOCKS proxy, the ComfyUI Manager fails to load Custom Nodes Manager.
PySocks 1.7.1 is installed

```
FETCH DATA from: K:\StableDiffusion\ComfyUI_windows_portable_nvidia\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui-manager\extras.json [DONE]
FETCH DATA from: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/extension-node-map.json[ComfyUI-Manager] Due to a network error, switching to local mode.
=> extension-node-map.json
=> [WinError 64] The specified network name is no longer available
FETCH DATA from: K:\StableDiffusion\ComfyUI_windows_portable_nvidia\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui-manager\extension-node-map.json [DONE]
FETCH DATA from: https://api.comfy.org/nodes?page=1&limit=1000Cannot connect to comfyregistry.
nightly_channel: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/cache
FETCH DATA from: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json[ComfyUI-Manager] Due to a network error, switching to local mode.
=> custom-node-list.json
=> [WinError 64] The specified network name is no longer available
FETCH DATA from: K:\StableDiffusion\ComfyUI_windows_portable_nvidia\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui-manager\custom-node-list.json [DONE]
FETCH DATA from: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/github-stats.json[ComfyUI-Manager] Due to a network error, switching to local mode.
=> github-stats.json
=> [WinError 64] The specified network name is no longer available
FETCH DATA from: K:\StableDiffusion\ComfyUI_windows_portable_nvidia\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui-manager\github-stats.json [DONE]
FETCH DATA from: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/extras.json[ComfyUI-Manager] Due to a network error, switching to local mode.
=> extras.json
=> [WinError 64] The specified network name is no longer available
FETCH DATA from: K:\StableDiffusion\ComfyUI_windows_portable_nvidia\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui-manager\extras.json [DONE]
```


Reproduce the failure in ComfyUI Manager's Custom Nodes Manager with a SOCKS proxy, focusing on the fetches from raw.githubusercontent.com and api.comfy.org shown in the report. Inspect the Python networking path and PySocks 1.7.1 handling on Windows; done means remote manager data loads through the proxy without the WinError 64 fallback.

Written by the indexing model from the issue text.