Reason:
- Bulk newest resolution should not display one success notice per file, while non-bulk resolution must retain its existing notice.
Changes:
- Pass an explicit notice flag only through the bulk resolution path.
- Cover bulk suppression, non-bulk notices, and ten-file progress updates.
Bulk newest-revision conflict resolution created one notice per resolved file
and updated progress for nine out of every ten files.
Keep per-file bulk resolution success messages in the log without displaying
notices, update notice-level progress once every ten files, and cover both
behaviours with unit tests.
Ouyang Xingyuan