Update ERC-4337: Extract aggregation to a separate ERC

[forshtat]

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[eip-review-bot]

✅ All reviewers have approved.

[github-actions[bot]]

The commit c4a2dfe0d9d3f12594927831a7bbac4f9c9d07b2 (as a parent of 5b627c05c5eaa361209db4c84aa2c0f8d5899912) contains errors. Please inspect the Run Summary for details.

[SamWilsn]

Close then reopen this after the other PR is merged and this one will go through.