scroll_to should be clarified that it only scrolls to the earliest buffer item

[ahuang11]

https://github.com/user-attachments/assets/e130780f-f900-4957-830b-ee2ac5675fc9

scroll_to(index: int): Column will scroll to the object at the specified index.

[philippjfr]

@ahuang11 as a maintainer please add labels when opening issues.