[IMP] event_sale: Add price currency

Adding the price currency on the event ticket
so that users will know which currency is used.

Task-3081384

Part-of: odoo/odoo#106980

addons/event_sale/models/event_ticket.py

@@ -20,6 +20,7 @@ class EventTemplateTicket(models.Model):
     product_id = fields.Many2one(
         'product.product', string='Product', required=True,
         domain=[("detailed_type", "=", "event")], default=_default_product_id)
+    currency_id = fields.Many2one(related="product_id.currency_id", string="Currency")
     price = fields.Float(
         string='Price', compute='_compute_price',
         digits='Product Price', readonly=False, store=True)

addons/event_sale/views/event_ticket_views.xml

@@ -46,7 +46,8 @@
                 <field name="product_id" context="{'default_detailed_type': 'event'}"/>
             </field>
             <field name="description" position="after">
-                <field name="price"/>
+                <field name="currency_id" invisible="1"/>
+                <field name="price" widget="monetary" options="{'currency_field': 'currency_id'}"/>
             </field>
         </field>
     </record>

addons/test_event_full/tests/test_performance.py

@@ -150,7 +150,7 @@ class TestEventPerformance(EventPerformanceCase):
         has_social = 'social_menu' in self.env['event.event']  # otherwise view may crash in enterprise
 
         # type and website
-        with freeze_time(self.reference_now), self.assertQueryCount(event_user=445):  # tef 400 / com 406
+        with freeze_time(self.reference_now), self.assertQueryCount(event_user=450):  # tef 402 / com 408
             self.env.cr._now = self.reference_now  # force create_date to check schedulers
             # Require for `website_menu` to be visible
             # <div name="event_menu_configuration" groups="base.group_no_one">
@@ -453,7 +453,7 @@ class TestOnlineEventPerformance(EventPerformanceCase, UtilPerf):
         # website customer data
         with freeze_time(self.reference_now):
             self.authenticate('user_eventmanager', 'user_eventmanager')
-            with self.assertQueryCount(default=39):  # tef 38
+            with self.assertQueryCount(default=42):  # tef 41
                 self._test_url_open('/event')
 
     @warmup
@@ -461,7 +461,7 @@ class TestOnlineEventPerformance(EventPerformanceCase, UtilPerf):
         # website customer data
         with freeze_time(self.reference_now):
             self.authenticate(None, None)
-            with self.assertQueryCount(default=28):
+            with self.assertQueryCount(default=38):
                 self._test_url_open('/event')
 
     # @warmup