Improve visual display of AI cell and the cells it produced

[yane-anaconda]

Problem: AI cells can produce many cells and users can easily get lost with what it produced and don't see what it produced

Solution: Add visual treatments so users can easily see what cells are associated with an AI cell

• shorten cells produced by the AI cell
• add a line from the cell produced to the AI cell
• add a number indication so users know how many cells were produced and which one they are currently looking at
• freeze the AI cell so the user can see the prompt as they scroll through the cells it produced

Design Proposal: https://miro.com/app/board/uXjVJryMMFM=/?moveToWidget=3458764648794416495&cot=14

Final Design: https://www.figma.com/design/ZJVAUlczPI6Xnj4zNAlQuE/In-the-Loop?node-id=305-33492&t=MwnHYU3RUwSILjNS-1