Simplify and enhance the `onEvent` logic by using `useCallback` for better performance and typing with `AuthChangeEvent` and `Session`. Add handling for the `INITIAL_SESSION` event, ensuring proper user identification and monitoring initialization.
Simplify and enhance the `onEvent` logic by using `useCallback` for better performance and typing with `AuthChangeEvent` and `Session`. Add handling for the `INITIAL_SESSION` event, ensuring proper user identification and monitoring initialization.