bug: AsyncHttpClient sends two sync requests on construction

[Kakadus]

Describe the bug

See https://github.com/bentoml/BentoML/blob/main/src/_bentoml_impl/client/http.py#L183-L186 and https://github.com/bentoml/BentoML/blob/main/src/_bentoml_impl/client/http.py#L332-L334. This completely hangs the event queue. As we used to create new clients repeatedly, this adds up.

I suggest wrapping AsyncHttpClient in a await asyncio.get_running_loop().run_in_executor(None, AsyncHttpClient) for now.

To reproduce

Add breakpoints to the quoted code and run:

AsyncHttpClient()

Expected behavior

I expect that all http requests are done asynchronously with the AsyncHttpClient.

Environment

bentoml: v1.4.5
python: 3.12
environment: Arch Linux