Incorrect navigation through changes in Compare Editor when editor is vertically split

## Steps to reproduce

1. Open Compare Editor for two different revisions or files. For example, open two revisions of a java file.
2. Split Compare Editor vertically: Window > Editor > Toggle Split Editor (Vertical)
3. Try to navigate (by double-clicking) through changes in the tree at the top of the editor ("Java Structure Compare") on the **left** side. Observe that corresponding changes are highlighted in Java editors in the **right** Compare Editor. Try navigating through changes on the right side and observe that corresponding changes are also highlighted in the right editor.


Expected: When navigating in "Structure Compare" tree and having editor split, the corresponding changes should be displayed on the same side of the split editor where the navigation is occurring.

## Tested under this environment:
* Eclipse IDE/Platform version (as shown in *Help > About*): Version: 2024-06 (4.32)