docs: document on_start in more places
@@ -60,6 +60,7 @@ class WebSocketClient:
:ivar Optional[ClientPresence] __presence: The presence used in connection.
:ivar Event ready: The ready state of the client as an ``asyncio.Event``.
:ivar Task __task: The closing task for ending connections.
+ :ivar bool __started: Whether the client has started.
:ivar Optional[str] session_id: The ID of the ongoing session.
:ivar Optional[int] sequence: The sequence identifier of the ongoing session.
:ivar float _last_send: The latest time of the last send_packet function call since connection creation, in seconds.
