Scroll to top of iframe when clicking on keyword

Alternatively, we could make the chatbot window move down to where the word was clicked.
We need to apply the move after the main text window has resized, because this could change the location of the word-button.

Start by locating the keyword click handling and the iframe or chatbot window positioning logic. Check how the main text window resize is handled, then ensure scrolling or moving occurs after that resize so the clicked word remains correctly positioned. Done means clicking a keyword reliably brings the relevant iframe content or chatbot area into view.

Written by the indexing model from the issue text.