Avoiding infinite recursion in trait implementation (#14261)

Co-authored-by: Matthias Seitz <matthias.seitz@outlook.de>

crates/node/core/src/cli/config.rs

@@ -55,7 +55,7 @@ impl<N: NetworkPrimitives> RethNetworkConfig for reth_network::NetworkManager<N>
     }
 
     fn secret_key(&self) -> secp256k1::SecretKey {
-        self.secret_key()
+        Self::secret_key(self)
     }
 }