rope: Add missing early return in `log_err_char_boundary` (#47191)

Closes ZED-465

Release Notes:

- N/A *or* Added/Fixed/Improved ...
46b275b9ddLukas Wirth committed on 1/20/2026, 8:08:22 AM· committed by GitHubparent09ceec0
1 file changedLine totals unavailable