feat: add ARC mainnet in token scanning

[maxime-oe]

Explanation

Adds ARC mainnet to Token Scanning in phishing-controller.

DO NOT MERGE until https://github.com/consensys-vertical-apps/va-mmcx-security-alerts-api/pull/194 (API) is merged.

References

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them