keepTraceForPassedTests error

When trying to set `keepTraceForPassedTests` config i get an error
https://codecept.io/helpers/Playwright/#playwright
```
In Playwright.php line 950:

Cannot set properties of undefined (setting 'trace')
```

先查看 issue 中連結的 Playwright 設定文件，接著檢查 Playwright.php 第 950 行附近的程式碼，並在啟用 keepTraceForPassedTests 的情況下重現錯誤。完成的標準是：該設定不再引發回報的未定義屬性錯誤，且相關行為由適當的測試涵蓋。

由索引模型根據 Issue 內容生成。