Fix: Render default SysGroup link text if groupTag is missing

workspaces/ui-express/src/ui/common/Links.tsx

@@ -96,7 +96,7 @@ export const AppResourceLink = ({ appresource }: { appresource: AppResource }):
 
 export const SysGroupLink = ({ sysGroup }: { sysGroup: SysGroup }): JSX.Element => (
   <Link to={ `/admin/sysgroup/${sysGroup.id}` }>
-    { sysGroup.groupTag }
+    { sysGroup.groupTag || sysGroup.id || '??' }
   </Link>
 );