[FIX] web: allow empty domain value with the in_dialog option
[FIX] web: allow empty domain value with the in_dialog option

The "in_dialog" option of the domain field was not working correctly
when the field value was falsy as it did not consider it to be
"[]" in that case (as it is done without the "in_dialog" option).

Same goes for the dialog which displays the matched records.

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo