fix(ui): tighten updates action row type narrowing

ui/src/components/updates/updates-notice-action-row.tsx

@@ -5,9 +5,6 @@ import { CopyButton } from '@/components/ui/copy-button';
 import { type SupportNoticeAction } from '@/lib/support-updates-catalog';
 
 export function UpdatesNoticeActionRow({ action }: { action: SupportNoticeAction }) {
-  const isRouteAction = action.type === 'route' && action.path;
-  const isCommandAction = action.type === 'command' && action.command;
-
   return (
     <div className="rounded-md border bg-muted/20 p-3">
       <div className="flex items-start justify-between gap-3">
@@ -16,7 +13,7 @@ export function UpdatesNoticeActionRow({ action }: { action: SupportNoticeAction
           <p className="text-xs text-muted-foreground">{action.description}</p>
         </div>
 
-        {isRouteAction && (
+        {action.type === 'route' && action.path && (
           <Button size="sm" asChild>
             <Link to={action.path}>
               Open
@@ -26,7 +23,7 @@ export function UpdatesNoticeActionRow({ action }: { action: SupportNoticeAction
         )}
       </div>
 
-      {isCommandAction && (
+      {action.type === 'command' && action.command && (
         <div className="mt-2 flex items-center gap-2 rounded-md border bg-background px-2 py-1.5">
           <Terminal className="h-3.5 w-3.5 text-muted-foreground" />
           <code className="min-w-0 flex-1 truncate text-[11px]">{action.command}</code>