[IMP] base: use correct string for search filter
[IMP] base: use correct string for search filter

Type is the label of the field state ('Custom Field' or 'Base Field') while
ttype is 'Field Type'

closes odoo/odoo#33124

Signed-off-by: Martin Trigaux (mat) <cc7c5be316e48d137cbb549833b85d91034d799d@odoo.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo