refactor(import): move the import parts to components/import

src/pages/ImportPage.test.jsx

@@ -3,7 +3,8 @@ import {afterEach, beforeEach, describe, expect, it, vi} from 'vitest';
 import {cleanup, fireEvent, render, screen, waitFor, within} from '@testing-library/react';
 import {MemoryRouter, Route, Routes} from 'react-router-dom';
 import {toast} from 'sonner';
-import ImportPage, {initialChoice, stepOf} from './ImportPage.jsx';
+import ImportPage from './ImportPage.jsx';
+import {initialChoice, stepOf} from '../utils/imports.js';
 import {PreferencesProvider} from '../context/PreferencesContext.jsx';
 import {CurrentUserProvider} from '../context/CurrentUserContext.jsx';
 import {fetchRoutes, json} from '../test/fetchRoutes.js';