Component close/reconnect behavior using RawSocket

When using RawSocket on the Component API, and closing the component's session from user code in an orderly fashion, no automatic reconnection attempts should happen.

import asyncio
import time

from autobahn.asyncio import component

# works as expected
transports=dict(
    type='websocket',
    url='ws://127.0.0.1:8080/ws',
)

# doesn't work properly
transports=dict(
    type='rawsocket',
    url='rs://127.0.0.1:8081',
)

comp = component.Component(
    transports=transports,
)

@comp.on_join
async def _(session, details):
    await asyncio.sleep(2)
    await comp.stop()

component.run([comp])

Original issue from OP on forum https://forum.crossbar.io/t/howto-ask-a-component-to-close-cleanly/2077

Start with the Component API example, focusing on the rawsocket transport and the await comp.stop() call inside the on_join handler; compare its behavior with the websocket example. No source files or tests are named in the issue, so first locate the RawSocket connection shutdown and reconnect entry points. Done means an orderly user-initiated stop does not trigger automatic reconnection attempts.