feat: adopt EDR multichain

[Wodann]

This PR tracks changes needed to backport EDR's feat/multichain branch to Hardhat 2 - when the time is right.

Please don't delete this branch.

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Latest commit: f9e4daa

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Name	Status	Preview	Comments	Updated (UTC)
hardhat	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 7, 2025 2:52pm