test: fix missing subgraph_service_address field

Author: neithanmo

crates/service/tests/router_test.rs

@@ -92,6 +92,7 @@ async fn full_integration_test() {
             chain_id: indexer_config::TheGraphChainId::Test,
             receipts_verifier_address: test_assets::VERIFIER_ADDRESS,
             receipts_verifier_address_v2: None,
+            subgraph_service_address: None,
         })
         .timestamp_buffer_secs(Duration::from_secs(10))
         .escrow_accounts_v1(escrow_accounts.clone())