[bug] 文件名有+时，打开HAR文件失败

**Describe the bug**
文件名有+时，打开HAR文件失败

**To Reproduce**
Steps to reproduce the behavior:

HAR文件命名为"18+.har"


**Expected behavior**
正常打开

**Screenshots**
<img width="260" height="137" alt="Image" src="https://github.com/user-attachments/assets/9cc29d53-c578-425b-b7e1-e68cda254a77" />

**Information**
 - Platform: mac
 - OS: 26.4
 - Arch: arm
 - App Version: 3.0.40(193)