Gloas set AttestationData.index (#9100)

For gloas `attestation.data.index` should be set to 1 if we are attesting to a block whose slot is not the attestation duty slot and slot payload_status is `FULL`


  


Co-Authored-By: Eitan Seri- Levi <eserilev@gmail.com>

Co-Authored-By: Eitan Seri-Levi <eserilev@ucsc.edu>

Co-Authored-By: dapplion <35266934+dapplion@users.noreply.github.com>

validator_client/validator_services/src/attestation_service.rs

@@ -546,6 +546,7 @@ impl<S: ValidatorStore + 'static, T: SlotClock + 'static> AttestationService<S,
                 attestation_data.beacon_block_root,
                 attestation_data.source,
                 attestation_data.target,
+                attestation_data.index != 0,
                 &self.chain_spec,
             ) {
                 Ok(attestation) => attestation,