create --dry-run: fix display of kept tagfile, fixes #5834#5835

ThomasWaldmann merged 1 commit intoborgbackup:1.1-maintborgbackup/borg:1.1-maintfrom

ThomasWaldmann:fix-dryrun-display-1.1ThomasWaldmann/borg:fix-dryrun-display-1.1Copy head branch name to clipboard