When the number of videos to be attached in allure for a test is more than 20 videos are not attached to the allure report

### Describe the Bug

When the number of videos to be attached in allure for a test is more than 20, videos are not attached to the allure report.

Behavior is inconsistent. At time none of the videos are attached. At times few videos are attached and not the rest.

### Steps to Reproduce

1. Attach videos to allure report using Allure.addAttachment

### Expected Behaviour

All videos should be attached to the report.

### Screenshots or Additional Context

_No response_

### What Language are you using?

Java

### What Framework/Allure Integration you are using?

TestNG

### What version of Allure Integration you are using?

2.28.0

### What version of Allure Report you are using?

2.28.0l

### Code of Conduct

- [X] I agree to follow this project's Code of Conduct

Start by reproducing the issue with Java, TestNG, Allure.addAttachment, and more than 20 videos using the reported 2.28.0 versions. Trace how attachments are written and included in the report; done means every video appears reliably in the generated Allure report.

Written by the indexing model from the issue text.