Bug 31331: Add data-order attribute for better sorting of dates

Bug 31331: Add data-order attribute for better sorting of dates

To test:
1. I used the following suggestiondates:

MariaDB [koha_kohadev]> select suggesteddate from suggestions;
+---------------+
| suggesteddate |
+---------------+
| 2022-01-03    |
| 2022-08-09    |
| 2022-02-22    |
| 2021-01-21    |
+---------------+

2. Set the dateformat system preference to 'mm/dd/yyyy'.
3. Try sorting the suggestion table by date, ascending and descending,
   it is not right.
4. Apply patch
5. Try sorting by date again, ascending and descending, it should now
   sort correctly.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>