chore: update accountingTransfer limit to 20

[oana-lolea]

Changes proposed in this pull request

• Updated limit for accountingTransfer to 20
• Updated tests
• Updated GraphQL description

Context

Fixes #3003

Checklist

• [x] Related issues linked using fixes #number
• [x] Tests added/updated
• [x] Make sure that all checks pass
• [ ] Bruno collection updated (if necessary)
• [ ] Documentation issue created with user-docs label (if necessary)
• [ ] OpenAPI specs updated (if necessary)

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