feat: add Ozone Chain Testnet configuration

[praddoskanna]

Add Ozone Chain Testnet Support

[kuzdogan]

Thanks for the PR! The CI failure here isn't something you did wrong in the config — both of Ozone Chain Testnet's RPC endpoints are currently down, so the chain can't be verified against.

What happened, step by step:

1. CI runs npm run generate -- --only 401, which liveness-probes the chain's RPC URLs. Both failed:

   [dead] #401 Ozone Chain Testnet — https://node1.testnet.ozonechain.io
   [dead] #401 Ozone Chain Testnet — https://node2.testnet.ozonechain.io
   1 chain(s) have no live RPC — keeping as supported:false
   

2. With no live RPC the chain is written as supported: false, which the Sourcify server confirms:

   supportedChains=[1337,31337] | allChains=[1337,31337,401]
   

3. Unsupported chains are filtered out of the test list, so no verification test was generated — hence the misleading "Did you forget to add a test for your new chain with the id(s) 401?" message. fix: fail generate --only when a chain has no live RPC #120 makes the "Build chains config" step itself fail in this situation, so future runs point straight at the dead RPCs instead.

Probing both endpoints directly:

• node1.testnet.ozonechain.io — HTTP 502 Bad Gateway from nginx. The proxy is up, the node behind it isn't.
• node2.testnet.ozonechain.io — TLS handshake fails, expired certificate:

  notAfter = Aug  3 13:41:11 2026 GMT   (Let's Encrypt)
  CI ran at  Aug  3 13:43:19 2026 GMT
  

  The certificate expired about two minutes before CI ran — auto-renewal appears not to have fired.

To move this forward, either get the cert renewed on node2 (and the backend restored on node1) and re-run CI, or point the override at a different working public endpoint if Ozone has one.

Two small nits on the diff itself:

• The new "401" block uses mixed 3- and 4-space indentation; the rest of the file is 4-space.
• The file still ends without a trailing newline.

Note that node1 isn't in your diff — it comes from the upstream chainid.network entry for 401 and gets merged with your override, so both get probed.

_{Posted with Claude Code}

[praddoskanna]

@kuzdogan Fix the certificate issue and lets ignore node1 as it has few other issues .

[praddoskanna]

Rerun CI Pipeline