test(e2e): stabilize direct upload selector

apps/web/e2e/core-upload.spec.ts

@@ -73,14 +73,13 @@ test.describe('Core media upload flow', () => {
     await page.goto(`/projects/${projectData.id}/assets`);
     const uploadButton = page.getByRole('button', { name: /点击或拖拽文件到这里批量上传素材/ });
     await expect(uploadButton).toBeEnabled({ timeout: 20_000 });
+    const fileInput = page.locator('.ant-upload input[type="file"]:not([disabled])').first();
+    await expect(fileInput).toBeAttached({ timeout: 20_000 });
     const completeResponsePromise = page.waitForResponse(
       (response) => response.url().includes('/api/v1/upload/direct/complete') && response.request().method() === 'POST',
       { timeout: 60_000 }
     );
-    const fileChooserPromise = page.waitForEvent('filechooser');
-    await uploadButton.click();
-    const fileChooser = await fileChooserPromise;
-    await fileChooser.setFiles({
+    await fileInput.setInputFiles({
       name: 'e2e-sample.MOV',
       mimeType: 'video/quicktime',
       buffer: Buffer.from('playwright mov upload smoke'),