fix(wallet)_: in case of sepolia optimism returned a nonce is not gen…

…erated the same way as it is for optimism mainnet

Changes done here simply increment the resolved nonce by sepolia optimism chain by one, cause
it's differently generated that it is for mainnet sepolia and other chains. This change aligns on that.

transactions/transactor.go

@@ -119,7 +119,11 @@ func (t *Transactor) NextNonce(rpcClient rpc.ClientInterface, chainID uint64, fr
 			if err != nil {
 				return 0, err
 			}
-			return nonce + countOfPendingTXs, nil
+			nonce = nonce + countOfPendingTXs
+		}
+		// sepolia optimism returns nonce differently than mainnet optimism, that's why we need to increment it by 1
+		if chainID == wallet_common.OptimismSepolia {
+			nonce++
 		}
 	}