Ariel issues

Results 2 issues of


                                            Ariel

![image](https://github.com/bytedance/bytemd/assets/26426569/a2f0166b-e136-4706-add5-7cbf7606da59)

Stale

文件太大，复制文本过长，预览效果加载不出来，导致页面卡顿崩溃,如图所示 ![image](https://github.com/bytedance/bytemd/assets/26426569/e7116d33-ceae-4f94-940e-9373df1fcbb0)