Issue 25239 - Fix for code intel prompt errors while diffing files in split mode
Created by: subhash686
Closes Issue - https://github.com/sourcegraph/sourcegraph/issues/25239
Test plan
Tested visually,
- launched comparison in split mode
- hovered on code elements on both "base" and "head" sides
- code intel prompt apperead at right line and space.
Working code intel prompt - "base" side of comparison
Working code intel prompt - "head" side of comparison
Element property that needed changing "data-split-mode"
