This pull request updates the authentication logic for API key users in the src/dependencies.py file. The main change is that API key users now receive an effective JWT token, if available, when their user object is created. This improves compatibility with systems that require JWT tokens, such as OpenSearch OIDC.

Authentication improvements:

• Added session_manager dependency to the get_api_key_user_async function to enable retrieval of JWT tokens.
• Obtained an effective JWT token using session_manager.get_effective_jwt_token(None, None) and assigned it to the jwt_token field of the user object, replacing the previous default of None. [1] [2]