refactor(web/test): default svelte-query mock in vitest.setup; remove from 34 files (B3)

web/src/routes/settings/Appearance.test.ts

@@ -25,11 +25,6 @@ vi.mock('$lib/api/listenbrainz', () => {
   };
 });
 
-vi.mock('@tanstack/svelte-query', async (orig) => {
-  const actual = (await orig()) as Record<string, unknown>;
-  return { ...actual, useQueryClient: () => ({ invalidateQueries: vi.fn() }) };
-});
-
 beforeEach(() => {
   globalThis.localStorage.clear();
   document.documentElement.removeAttribute('data-theme');

web/src/routes/settings/settings.test.ts

@@ -20,14 +20,6 @@ vi.mock('$lib/api/me', () => ({
   regenerateAPIToken: vi.fn()
 }));
 
-vi.mock('@tanstack/svelte-query', async (orig) => {
-  const actual = (await orig()) as Record<string, unknown>;
-  return {
-    ...actual,
-    useQueryClient: () => ({ invalidateQueries: vi.fn() })
-  };
-});
-
 import SettingsPage from './+page.svelte';
 import {
   createLBStatusQuery,