REPL not recognizing previous declarations: <img width="1052" alt="Screenshot 2024-04-15 at 1 52 56 PM" src="https://github.com/source-academy/py-slang/assets/30220768/93f916f9-a490-4988-8e5d-f933beb4b969"> REPL used to work: <img width="666" alt="Screenshot 2024-04-15 at 1 52 23 PM" src="https://github.com/source-academy/py-slang/assets/30220768/18244016-6327-4b44-a598-ac2012460ebc">
