feat(helpdesk): add Description and Cust_Name from LV entity to team table

PBI_LV_Tickets exposes Description and Cust_Name (not Company_Contact_Name
which is FP-only). Add both to select. Table now shows 5 columns:
Ticket (link) | Customer name (link) | Description (ellipsis) |
Category | Last activity.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

modules/helpdesk/web/css/helpdesk.css

@@ -219,6 +219,13 @@
     color: var(--app-muted-color);
   }
 
+  .helpdesk-team-ticket-desc {
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+    max-width: 18ch;
+  }
+
   /* Links */
   .helpdesk-team-ticket-no a,
   .helpdesk-team-ticket-table td a {