fix(player): fix Player._connected isn't True after Player.connect()

[penggin]

Summary

Fix Player.connect() does not wait until Player._connected became True

Minimal Reproducible Code

player = await voice_channel.connect(cls=Player)
print(player.is_connected())

Checklist

• If code changes were made then they have been tested.
• I have run task lint to format code and my changes.
• I have run task pyright and fixed the relevant issues.