[FIX] point_of_sale: wrong date on session last closing date

Before this commit, the last closing date of the POS didn't take into
account the timezone.

Now, the date take into account the timezone.

opw-2231820

X-original-commit: 1b738ac4b8b52042976ad209a1968135c55a16dc

addons/point_of_sale/models/pos_config.py

@@ -3,6 +3,7 @@
 
 from datetime import datetime
 from uuid import uuid4
+import pytz
 
 from odoo import api, fields, models, tools, _
 from odoo.exceptions import ValidationError, UserError
@@ -269,7 +270,8 @@ class PosConfig(models.Model):
                 ['cash_register_balance_end_real', 'stop_at', 'cash_register_id'],
                 order="stop_at desc", limit=1)
             if session:
-                pos_config.last_session_closing_date = session[0]['stop_at'].date()
+                timezone = pytz.timezone(self._context.get('tz') or self.env.user.tz or 'UTC')
+                pos_config.last_session_closing_date = session[0]['stop_at'].astimezone(timezone).date()
                 if session[0]['cash_register_id']:
                     pos_config.last_session_closing_cash = session[0]['cash_register_balance_end_real']
                     pos_config.last_session_closing_cashbox = self.env['account.bank.statement'].browse(session[0]['cash_register_id'][0]).cashbox_end_id