Apply rustfmt to new unified payment test

Author: elnafateh

tests/integration_tests_rust.rs

@@ -3010,7 +3010,8 @@ async fn unified_send_bolt11_duplicate_payment_no_onchain_fallback() {
 	let expiry_sec = 4_000;
 
 	// Receive a unified payment on node_b — this will produce a URI with BOLT12 offer + BOLT11 invoice.
-	let uri_str = node_b.unified_payment().receive(expected_amount_sats, "asdf", expiry_sec).unwrap();
+	let uri_str =
+		node_b.unified_payment().receive(expected_amount_sats, "asdf", expiry_sec).unwrap();
 
 	// Strip the BOLT12 offer so the URI resolves to BOLT11 only (no BOLT12, no on-chain fallback).
 	let uri_str_bolt11_only = uri_str.split("&lno=").next().unwrap();