feat: unify recover fn result type (#13897)

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

crates/primitives/benches/recover_ecdsa_crit.rs

@@ -13,7 +13,7 @@ pub fn criterion_benchmark(c: &mut Criterion) {
             let raw =hex!("f88b8212b085028fa6ae00830f424094aad593da0c8116ef7d2d594dd6a63241bccfc26c80a48318b64b000000000000000000000000641c5d790f862a58ec7abcfd644c0442e9c201b32aa0a6ef9e170bca5ffb7ac05433b13b7043de667fbb0b4a5e45d3b54fb2d6efcc63a0037ec2c05c3d60c5f5f78244ce0a3859e3a18a36c61efb061b383507d3ce19d2");
             let mut pointer = raw.as_ref();
             let tx = TransactionSigned::decode(&mut pointer).unwrap();
-            tx.recover_signer();
+            tx.recover_signer().unwrap();
             }
         )
     });