Duplicate names will be overwritten

When you have multiple requests with the same name in an har file, they will be overwritten when creating the zip

For example, in this case only the tiny files of 2 bytes will be inside the zip file:

<img width="675" alt="Image" src="https://github.com/user-attachments/assets/2d3c5f2e-5bb9-4d10-8d5b-fa9080548537" />