[IMP] stock: backorder wizard

Replaces <p> by <div> and gives a name to the first paragraph to make an
override easier (for now, overrided by `stock_barcode`).

task-2666478

Part-of: odoo/odoo#91807

addons/stock/wizard/stock_backorder_confirmation_views.xml

@@ -6,13 +6,13 @@
         <field name="arch" type="xml">
             <form string="Backorder creation">
                 <group>
-                    <p>
+                    <div><p name="explanation-text">
                         You have processed less products than the initial demand.
-                    </p><p class="text-muted">
+                    </p></div><div class="text-muted">
                         Create a backorder if you expect to process the remaining
                         products later. Do not create a backorder if you will not
                         process the remaining products.
-                    </p>
+                    </div>
                 </group>
 
                 <!-- Added to ensure a correct default_get behavior
@@ -36,7 +36,7 @@
                 <footer>
                     <button name="process" string="Create Backorder" type="object" class="oe_highlight" data-hotkey="q"/>
                     <button name="process_cancel_backorder" string="No Backorder" type="object" class="btn-primary" attrs="{'invisible': [('show_transfers', '=', True)]}" data-hotkey="w"/>
-                    <button string="_Cancel" class="btn-secondary" special="cancel" data-hotkey="z" />
+                    <button string="Cancel" class="btn-secondary" special="cancel" data-hotkey="z" />
                 </footer>
             </form>
         </field>