fix(main.py): fix async stream handling during bedrock error

litellm/main.py

@@ -368,6 +368,8 @@ async def acompletion(
 async def _async_streaming(response, model, custom_llm_provider, args):
     try:
         print_verbose(f"received response in _async_streaming: {response}")
+        if asyncio.iscoroutine(response):
+            response = await response
         async for line in response:
             print_verbose(f"line in async streaming: {line}")
             yield line