AutoProvider coroutine bug #3704
Description
What happened?
reported by @fubuloubu
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The AutoProvider needs async support. We should write a test that runs through each provider class we have and makes sure that we can connect appropriately and that it disconnects with cleanup.
We should write up the WebSocketProvider as the default websocket provider and expect that this is asynchronous. This is a breaking change since it would replace the LegacyWebsocketProvider so it should probably stay behind a flag for now with a warning that the websocket provider will be asynchronous in v8 once the LegacyWebscoketProvider is removed.
This usage should also be documented in our docs.