Since fbbfa6d it's not longer possible
to write a date without separator (e.g., 0102 for 01/02/2019; 121298 for
12/12/1998; 02042018 for 02/04/2018), or a date without year (e.g.,
01/02 for 01/02/2019) in the datepicker widget.
In this commit we have decided to be as permissive as tempus dominus
that call moment.js with strict false. This allows moment.js to deduct a
date from a string in a more versatile way. This also allows a more
versatile autocomplete in the search views.
opw-2070464
opw-2070931
closesodoo/odoo#37095
Forward-port-of: odoo/odoo#36821
Signed-off-by: Lucas Perais (lpe) <lpe@odoo.com>