refactor(subscription): use ChevronRightIcon from icons barrel

The five extracted sheet components each had a hand-inlined chevron
SVG copy-pasted from the original god page. Swap them for the
existing ChevronRightIcon from src/components/icons — same visual,
one source of truth (Heroicons-aligned path), and pre-baked sizing
through the cn() className merge.

Note on the broader 'icon unification' audit recommendation: this
project does not depend on lucide-react. It already ships a 703-line
hand-rolled icon barrel at src/components/icons/index.tsx. The real
cleanup is migrating the ~139 inline SVGs across the app to that
barrel, not adding a new icon library. This commit consolidates the
five duplicated chevrons introduced by the recent sheet extraction;
broader inline-SVG migration is a separate, larger refactor.

src/components/subscription/sheets/ServerManagementSheet.tsx

@@ -4,6 +4,7 @@ import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { subscriptionApi } from '../../../api/subscription';
 import { getErrorMessage, getFlagEmoji } from '../../../utils/subscriptionHelpers';
 import InsufficientBalancePrompt from '../../InsufficientBalancePrompt';
+import { ChevronRightIcon } from '../../icons';
 import type { PurchaseOptions, Subscription } from '../../../types';
 
 // ──────────────────────────────────────────────────────────────────
@@ -88,15 +89,7 @@ export function ServerManagementSheet({
               {t('subscription.servers', { count: subscription.servers?.length || 0 })}
             </div>
           </div>
-          <svg
-            className="h-5 w-5 text-dark-400"
-            fill="none"
-            viewBox="0 0 24 24"
-            stroke="currentColor"
-            strokeWidth={2}
-          >
-            <path strokeLinecap="round" strokeLinejoin="round" d="M9 5l7 7-7 7" />
-          </svg>
+          <ChevronRightIcon className="text-dark-400" />
         </div>
       </button>
     );