fix(fcm): 시스템 카테고리 알림 저장 제외 정책을 서비스에 반영한다

src/main/kotlin/kr/co/vividnext/sodalive/can/charge/event/ChargeEventService.kt

@@ -79,7 +79,7 @@ class ChargeEventService(
                 applicationEventPublisher.publishEvent(
                     FcmEvent(
                         type = FcmEventType.INDIVIDUAL,
-                        category = PushNotificationCategory.MESSAGE,
+                        category = PushNotificationCategory.SYSTEM,
                         title = chargeEvent.title,
                         messageKey = "can.charge.event.additional_can_paid",
                         args = listOf(additionalCan),
@@ -103,7 +103,7 @@ class ChargeEventService(
         applicationEventPublisher.publishEvent(
             FcmEvent(
                 type = FcmEventType.INDIVIDUAL,
-                category = PushNotificationCategory.MESSAGE,
+                category = PushNotificationCategory.SYSTEM,
                 titleKey = "can.charge.event.first_title",
                 messageKey = "can.charge.event.additional_can_paid",
                 args = listOf(additionalCan),

src/main/kotlin/kr/co/vividnext/sodalive/fcm/notification/PushNotificationService.kt

@@ -48,6 +48,7 @@ class PushNotificationService(
         if (recipientMemberIds.isEmpty()) return
 
         val category = resolveCategory(fcmEvent) ?: return
+        if (category == PushNotificationCategory.SYSTEM) return
         val senderSnapshot = resolveSenderSnapshot(fcmEvent)
         val deepLink = FcmService.buildDeepLink(
             serverEnv = serverEnv,