Fix UTs for Get Ethernet Port Counters Request

```
Changes :
- Fixes UTs for encode/decodeEthPortTelemetryCounterReq to align with comments
  addressed in commit 2777a0915c8b5b5016a1c621791a0e92a8974a2e
```

Fixes JIRA https://jirasw.nvidia.com/browse/DGXOPENBMC-15778

libnsm/test/libnsm_network_ports_test.cpp

diff --git a/libnsm/test/libnsm_network_ports_test.cpp b/libnsm/test/libnsm_network_ports_test.cpp
index 5324861..237b5c6 100644
--- a/libnsm/test/libnsm_network_ports_test.cpp
+++ b/libnsm/test/libnsm_network_ports_test.cpp
@@ -3491,7 +3491,8 @@
 	    encode_get_eth_port_telemetry_counter_req(0, port_number, request);
 
 	struct nsm_get_ethernet_port_telemetry_counter_req *req =
-	    reinterpret_cast<nsm_get_ethernet_port_telemetry_counter_req *>(
+	    reinterpret_cast<
+		struct nsm_get_ethernet_port_telemetry_counter_req *>(
 		request->payload);
 
 	EXPECT_EQ(rc, NSM_SW_SUCCESS);
@@ -3499,8 +3500,9 @@
 	EXPECT_EQ(1, request->hdr.request);
 	EXPECT_EQ(NSM_TYPE_NETWORK_PORT, request->hdr.nvidia_msg_type);
 	EXPECT_EQ(NSM_GET_ETH_PORT_TELEMETRY_COUNTER, req->hdr.command);
-	EXPECT_EQ(1, req->hdr.data_size);
-	EXPECT_EQ(port_number, req->port_number);
+	EXPECT_EQ(2, req->hdr.data_size);
+	uint16_t decodedPortNumber = le16toh(req->port_number);
+	EXPECT_EQ(port_number, decodedPortNumber);
 }
 
 TEST(encodeEthPortTelemetryCounterReq, testBadEncodeRequest)
@@ -3517,8 +3519,9 @@
 					 0x89,
 					 NSM_TYPE_NETWORK_PORT,
 					 NSM_GET_ETH_PORT_TELEMETRY_COUNTER,
+					 2,
 					 1,
-					 1};
+					 0};
 
 	auto request = reinterpret_cast<nsm_msg *>(request_msg.data());
 	size_t msg_len = request_msg.size();