uvloop is broken for abstract sockets - create_unix_connection does not work for abstract sockets as libuv does not support them

還沒有人認領這個 Issue。

* **uvloop version**: master
* **Python version**: 3.10+
* **Platform**: unix
* **Can you reproduce the bug with `PYTHONASYNCIODEBUG` in env?**: yes
* **Does uvloop behave differently from vanilla asyncio? How?**: yes

uvloop:
tr = UnixTransport.new(self, protocol, None, waiter, context)
tr.connect(path) <--- uses uv_pipe_connect which uses uv__strscpy which assumes zero terminated string

asyncio:
sock_connect -> getsockaddrarg (in socketmodule.c) which uses memcpy


I have raised this with libuv as issue: https://github.com/libuv/libuv/discussions/3911

從 create_unix_connection 和所示的 UnixTransport.new/tr.connect(path) 路徑開始，接著將其與 vanilla asyncio 對 socket_connect 的處理進行比較。在決定修正應歸屬於 uvloop 還是 libuv 之前，閱讀連結的 libuv 關於抽象 socket 的討論。抽象 Unix socket 連線能夠如預期運作，且已透過與 asyncio 對照驗證其行為，即視為完成。

由索引模型根據 Issue 內容生成。