skip proposer bonus if no attestation for v index

specs/core/0_beacon-chain.md

@@ -1946,6 +1946,7 @@ def compute_normal_justification_and_finalization_deltas(state: BeaconState) ->
         else:
             deltas[1][index] += get_base_reward(state, index)
         # Proposer bonus
+        if index in get_attesting_indices(state, state.previous_epoch_attestations):
             proposer_index = get_beacon_proposer_index(state, inclusion_slot(state, index))
             deltas[0][proposer_index] += get_base_reward(state, index) // ATTESTATION_INCLUSION_REWARD_QUOTIENT
     return deltas