Convert double-quoted string keys and values to single quotes across
app/Language/ar-EG/Common.php and app/Language/ar-LB/Common.php for
consistency with existing single-quoted entries (e.g. export_all,
export_page) already present in these files.
- No functional or translation content changes, quoting style only
- Aligns with project coding standard preferring single quotes for
non-interpolated strings
Signed-off-by: objecttothis <17935339+objecttothis@users.noreply.github.com>