fix: correct method name for sending push notification

backend/src/modules/geofence/geofence.service.ts

@@ -56,7 +56,7 @@ export class GeofenceService {
         this.logger.log(`Geofence breach by ${userType} ${userId} in zone ${zone.name}. Sending campaign.`);
         
         // Send Notification
-        await this.notifications.sendPushToUser(tenantId, userId, {
+        await this.notifications.sendToUser(tenantId, userId, {
           title: zone.campaign_title,
           body: zone.campaign_body,
           data: { type: 'geofence_promo', zoneId: zone.id },