validator-network: Don't convert network errors

Don't convert network errors in the `send_to` function within the
`validator-network` subcrate.

validator-network/src/network_impl.rs

@@ -205,18 +205,22 @@ where
             validator_id: self.local_validator_id()?,
             inner: msg,
         };
-        if let Ok(peer_id) = self.get_validator_peer_id(validator_id).await {
-            self.network
-                .message(msg, peer_id)
-                .map_err(|e| {
-                    // The validator peer id might have changed and thus caused a connection failure.
-                    self.clear_validator_peer_id_cache(validator_id);
-
-                    NetworkError::Request(e)
-                })
-                .await
-        } else {
-            Err(NetworkError::Unreachable)
+        match self.get_validator_peer_id(validator_id).await {
+            Ok(peer_id) => {
+                self.network
+                    .message(msg, peer_id)
+                    .map_err(|e| {
+                        // The validator peer id might have changed and thus caused a connection failure.
+                        self.clear_validator_peer_id_cache(validator_id);
+
+                        NetworkError::Request(e)
+                    })
+                    .await
+            }
+            Err(e) => {
+                log::error!(error = ?e, "Error getting validator peer ID");
+                Err(e)
+            }
         }
     }