session_info: add dispute_period and random_seed (#4547)

polkadot/node/network/availability-distribution/src/tests/mock.rs

@@ -65,6 +65,8 @@ pub fn make_session_info() -> SessionInfo {
 		no_show_slots: 0,
 		needed_approvals: 0,
 		active_validator_indices: Vec::new(),
+		dispute_period: 6,
+		random_seed: [0u8; 32],
 	}
 }