Type http.client.HTTPConnection.sock (#8386)

stdlib/http/client.pyi

@@ -157,7 +157,7 @@ class HTTPConnection:
     timeout: float | None
     host: str
     port: int
-    sock: Any
+    sock: socket | Any  # can be `None` if `.connect()` was not called
     def __init__(
         self,
         host: str,
@@ -180,6 +180,8 @@ class HTTPConnection:
     def send(self, data: _DataType) -> None: ...
 
 class HTTPSConnection(HTTPConnection):
+    # Can be `None` if `.connect()` was not called:
+    sock: ssl.SSLSocket | Any  # type: ignore[override]
     def __init__(
         self,
         host: str,