fix: use vi.restoreAllMocks and toMatchSnapshot in dialog tests

- OverageMenuDialog.test.tsx: add afterEach with vi.restoreAllMocks(),
  remove RadioButtonSelect mock, use renderWithProviders + toMatchSnapshot
  for rendering tests and keyboard input for handler tests
- EmptyWalletDialog.test.tsx: same treatment as OverageMenuDialog
- useQuotaAndFallback.test.ts: vi.clearAllMocks() → vi.restoreAllMocks()
  in afterEach to prevent test pollution

packages/cli/src/ui/hooks/useQuotaAndFallback.test.ts

@@ -103,7 +103,7 @@ describe('useQuotaAndFallback', () => {
   });
 
   afterEach(() => {
-    vi.clearAllMocks();
+    vi.restoreAllMocks();
   });
 
   it('should register a fallback handler on initialization', () => {