feat: Implement notification channel based on status (Service Dialog Form and Refactor Split ServiceForm into smaller components).

- The Service Dialog Form's Notification Channel field now respects the `notification_status`. If `notification_status` is enabled, the user can select one or multiple notification channel IDs.

application/src/types/service.types.ts

@@ -17,6 +17,7 @@ export interface Service {
   updated?: string;
   notification_channel?: string;
   notificationChannel?: string; // Keep for backward compatibility
+  notification_status?: "enabled" | "disabled"; // Add notification_status field
   alertTemplate?: string;
   alerts?: "muted" | "unmuted"; // Make sure alerts is properly typed as union
   muteAlerts?: boolean; // Keep this to avoid breaking existing code