Blocklist addition request

### Malicious domains, IPs, IPFS hashes, or IPNS names

https://arcburner.io/
https://arcburner.app/

### Please explain why this content is malicious

Hi, please check Blocklist removal request #294315. It has been marked as closed but issue still remains.

Metamask is still showing the phishing warning (This website might be harmful) on opening the website.

### Is this a duplicate request?

- [x] I have checked the issues page and confirmed this is not a duplicate request

Start by reviewing blocklist removal request #294315 and the repository's existing process for handling malicious domains. Verify the two listed domains and determine what change is needed so the phishing-detection status matches the request; done means the repository reflects the decided blocklist state.

Written by the indexing model from the issue text.