[FIX] l10n_it_edi: law reference field should always be visible

Taxes on self-invoices for non-EU export actually have amount > 0,
l10n_it_has-exoneration = False but they must have the law reference
field filled out, so we're taking the "invisible" clause
out of the view.

Task: https://www.odoo.com/web#id=3010849&model=project.task


opw-3010849

closes odoo/odoo#104745

Signed-off-by: Josse Colpaert <jco@odoo.com>

addons/l10n_it_edi/data/invoice_it_template.xml

@@ -166,7 +166,7 @@
                     <ImponibileImporto t-esc="format_monetary(tax_dict['base_amount'] if currency.name == 'EUR' else tax_dict['base_amount_currency'], currency)"/>
                     <Imposta t-esc="format_monetary(tax_dict['tax_amount'] if currency.name == 'EUR' else tax_dict['base_amount_currency'], currency)"/>
                     <EsigibilitaIVA t-if="not has_exoneration or kind_exoneration == 'N6'" t-esc="tax.l10n_it_vat_due_date"/>
-                    <RiferimentoNormativo t-if="has_exoneration" t-esc="format_alphanumeric(tax.l10n_it_law_reference[:100])"/>
+                    <RiferimentoNormativo t-if="tax.l10n_it_law_reference" t-esc="format_alphanumeric(tax.l10n_it_law_reference[:100])"/>
                 </DatiRiepilogo>
             </t>
         </DatiBeniServizi>

addons/l10n_it_edi/views/l10n_it_view.xml

@@ -26,7 +26,7 @@
                     <field name="l10n_it_vat_due_date"/>
                     <field name="l10n_it_has_exoneration" readonly="False"/>
                     <field name="l10n_it_kind_exoneration" attrs="{'invisible': [('l10n_it_has_exoneration', '=', False)]}"/>
-                    <field name="l10n_it_law_reference" attrs="{'invisible': [('l10n_it_has_exoneration', '=', False)]}"/>
+                    <field name="l10n_it_law_reference"/>
                 </group>
             </xpath>
         </data>