[FIX] sale: add date label to quotation preview at 'sent' stage

Steps to reproduce :

  - Install 'Accounting'
  - Create a quotation then send it (without confirming it)
  - Click on Preview

Issue :

  `Date` field is not preceded by a label.

Solution :

  Display "Quotation Date:" label if quotation is not in one of this states :
  `sale`, `done` or `cancel`.

opw-2585000

closes odoo/odoo#73181

X-original-commit: b35b8938c5fea82d27d29601b7d7a04bfc67eb66
Signed-off-by: bon-odoo <nboulif@users.noreply.github.com>

addons/sale/views/sale_portal_templates.xml

@@ -366,12 +366,12 @@
                 </div>
                 <div class="row" id="so_date">
                     <div class="mb-3 col-6">
-                      <t t-if="sale_order.state == 'draft'">
-                        <strong>Quotation Date:</strong> 
-                      </t>
                       <t t-if="sale_order.state in ['sale', 'done', 'cancel']">
                         <strong>Order Date:</strong> 
                       </t>
+                      <t t-else="">
+                         <strong>Quotation Date:</strong>
+                      </t>
                       <span t-field="sale_order.date_order" t-options='{"widget": "date"}'/>
                     </div>
                     <div class="mb-3 col-6" t-if="sale_order.validity_date">