Update ERC-7726: Move to Review

[ruvaag]

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[eip-review-bot]

File ERCS/erc-7726.md

Requires 1 more reviewers from @axic, @g11tech, @SamWilsn, @xinbenlv

[SamWilsn]

I can't approve this yet. I'll need to come up with something for ISO 4217 that the other editors agree on. I'll get back to you.