…x-llamaindex-python into package-name

…x-llamaindex-python into package-name

…l in LlamaIndex SDK.

This PR improves session cleanup by using `asyncio.get_running_loop` instead of `asyncio.get_event_loop`. The latter is deprecated and has been known to cause complications. If no running loop is found, then a `RuntimeError` is thrown and caught, and a new event loop is spun up to close the session.

Key changes:
* Use `asyncio.get_running_loop` instead of `asyncio.get_event_loop`.
* Catch and handle a specific `RuntimeError` that can occur if no running loop is found.
* Spin up a new event loop to close the session if no running loop is found.

…sync-client