fix(web): add trailing slash to notification list API call (#9521)

list() omitted the trailing slash while every sibling method and the
Django route require /users/notifications/. Self-hosted (Traefik)
surfaces the upstream 404 as 500; unread badge still works.

Fixes makeplane/plane#9489

apps/web/core/services/workspace-notification.service.ts

@@ -36,7 +36,7 @@ export class WorkspaceNotificationService extends APIService {
     params: TNotificationPaginatedInfoQueryParams
   ): Promise<TNotificationPaginatedInfo | undefined> {
     try {
-      const { data } = await this.get(`/api/workspaces/${workspaceSlug}/users/notifications`, {
+      const { data } = await this.get(`/api/workspaces/${workspaceSlug}/users/notifications/`, {
         params,
       });
       return data || undefined;