editor: Fix move line up panic when selection is at end of line next to fold marker (#34982)
Closes #34826
In move line up method, make use of `prev_line_boundary` which accounts
for fold map, etc., for selection start row so that we don't incorrectly
calculate row range to move up.
Release Notes:
- Fixed an issue where `editor: move line up` action sometimes crashed
if the cursor was at the end of a line beside a fold marker.
b63d820be2Smit Barmase committed on 7/23/2025, 10:16:29 PM· committed by GitHubparent7e9d6cc