Enable the invoke_model_with_response_stream API (#3031)

This API is a streaming API—I tested it manually, an E2E test an example
are forthcoming. I also removed the unused `config` service from the
smoketest and added bedrock-runtime.

## Motivation and Context
This API is suppressed by default because it's an event stream API

## Description


## Testing
https://gist.github.com/rcoh/ce61429303a56fefd65ba05bd36d28fc works



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