fix: include desired_commission_percent in admin notification

Add the field to the notification data dict and render it in the
Telegram message sent to admins on new partner applications.

app/cabinet/routes/partner_application.py

@@ -142,6 +142,7 @@ async def apply_for_partner(
                         'website_url': request.website_url,
                         'description': request.description,
                         'expected_monthly_referrals': request.expected_monthly_referrals,
+                        'desired_commission_percent': request.desired_commission_percent,
                     },
                 )
             finally:

app/services/admin_notification_service.py

@@ -1688,6 +1688,8 @@ class AdminNotificationService:
                 message_lines.append(f'📝 {html.escape(desc)}')
             if application_data.get('expected_monthly_referrals'):
                 message_lines.append(f'👥 Ожидаемых рефералов: {application_data["expected_monthly_referrals"]}/мес')
+            if application_data.get('desired_commission_percent'):
+                message_lines.append(f'💰 Желаемая комиссия: {application_data["desired_commission_percent"]}%')
 
             message_lines.extend(
                 [