Update Sepolia ENS subgraph

[tony8713]

Summary

• Update Sepolia ensSubgraph to the indexed ENS Sepolia deployment DmMXLtMZnGbQXASJ7p1jfzLUbBYnYUD9zNBTxpkjHYXV.
• Replace the previous deployment CA5t8ep58QKXBdLrjJHaREETHpCsy63kro9Eem6zBQAD, which currently returns bad indexers / indexer not available through Subgrapher.

Validation

• Queried the new Subgrapher URL for 0x24f15402c6bb870554489b2fd2049a85d75b982f and confirmed it returns testchaitu.eth.
• In snapshot-labs/stamp, temporarily swapped to the same URL and ran yarn jest --runInBand --forceExit test/integration/lookupDomains.test.ts -t sepolia; the Sepolia lookup test passed.
• yarn typecheck passes in this repo.

Note

• yarn test:once test/e2e/utils.spec.js -t 'return an address for sepolia' currently fails by returning the zero address from direct onchain ENS resolution. That test does not exercise ensSubgraph, so I treated it as an unrelated live Sepolia/RPC expectation issue.

[Copilot]

Pull request overview

Updates the Sepolia ENS subgraph endpoint in src/networks.json to point to a new indexed Subgrapher deployment, replacing a previous deployment that was returning indexer availability errors.

Changes:

• Swapped Sepolia ensSubgraph URL from deployment CA5t8... to DmMXLt... to restore ENS reverse-lookup functionality via Subgrapher.

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[ChaituVR]

https://thegraph.com/explorer/subgraphs/CA5t8ep58QKXBdLrjJHaREETHpCsy63kro9Eem6zBQAD?view=Query&chain=arbitrum-one Is working? 🤔 maybe there was some error before?

[wa0x6e]

https://thegraph.com/explorer/subgraphs/CA5t8ep58QKXBdLrjJHaREETHpCsy63kro9Eem6zBQAD?view=Query&chain=arbitrum-one Is working? 🤔 maybe there was some error before?

Dead again:

{
  "errors": [
    {
      "message": "bad indexers: {0xbdfb5ee5a2abf4fc7bb1bd1221067aef7f9de491: BadResponse(400)}"
    }
  ]
}

The new address from this PR is the one referenced in ENS doc