fix: prefer latest upgrade path and remove legacy version address map

[dan13ram]

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Project	Deployment	Actions	Updated (UTC)
testnet-nouns-builder	Ready	Preview	May 9, 2026 9:05am

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
nouns-builder	Ignored		May 9, 2026 9:05am

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 6a3dfcd5-72e7-481b-a696-f7abe03bb688

📥 Commits

Reviewing files that changed from the base of the PR and between 4669d32 and 436c76c.

📒 Files selected for processing (2)

• packages/constants/src/versions.ts
• packages/hooks/src/useAvailableUpgrade.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/mainnet-manager-v2

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