[FIX] web: search input of date

When the user searches for date (or a datetime) in the search bar, the
suggested date can become completely wrong. For example, in the French
localization where the date format is DD/MM/YYYY, the system will search
for the date MM/DD/YYYY. This is even worse when the date is not fully
written: DD/MM could be converted to MM/DD/0000, which doesn't make any
sense. This is related to the moment issue
https://github.com/moment/moment/issues/1407.

The fix is to make sure that the input date has a correct format thanks
to `parse_value`. The latter converts the date into a fixed format.

Fixes #11876
opw-676604