Add threads.com

[conmas]

Threads has updated their domain from threads.net to threads.com, adding this to shared credentials.

Source: https://about.fb.com/news/2025/04/new-features-threads-web-experience/

Overall Checklist

• I agree to the project's Developer Certificate of Origin
• The top-level JSON objects are sorted alphabetically
• There are no open pull requests for the same update

for shared-credentials.json

• There's evidence the domains are currently related (SSL certificates, DNS entries, valid links between sites, legal documents etc.)
• If using shared, the new group serves login pages on each of the included domains, and those login pages accept accounts from the others. (For example, we wouldn't use a shared association from google.co.il to google.com, because google.co.il redirects to accounts.google.com for sign in.)
• If using from and to, the new group, the from domain(s) redirect to the to domain to log in.

[conmas]

Should there be a from / to association between threads.net and threads.com, and then separately a shared association between instagram.com and threads.com? Not sure how to handle this scenario, there weren't other examples in the list.