chain_get_era_summary RPC call removes Delegator and Validator fields from response

[meywood]

Node response fields are not returned via chain_get_era_summary RPC call The following fields are not returned via a chain_get_era_summary RPC call:

• merkle_proof
• Validator
• Delegator

To Reproduce

Invoke chain_get_era_summary RPC call

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Defect Type

• [ ] Regression
• [ ] New
• [ ] Escape