Fix tx blob deserialization after PeerDAS (#8729)

* Added test for failed deserialization

* Try fix failing deserialization

* Simplify code

* Try another fix

* Simplify fix

Author: alexb5dh

src/Nethermind/Nethermind.Network.Test/P2P/Subprotocols/Eth/V66/PooledTransactionsMessageSerializerTests.cs

@@ -1,6 +1,7 @@
 // SPDX-FileCopyrightText: 2022 Demerzel Solutions Limited
 // SPDX-License-Identifier: LGPL-3.0-only
 
+using System;
 using Nethermind.Core;
 using Nethermind.Core.Collections;
 using Nethermind.Core.Crypto;
@@ -52,5 +53,16 @@ public void Roundtrip()
 
             SerializerTester.TestZero(serializer, message, "f8d7820457f8d2f867088504a817c8088302e2489435353535353535353535353535353535353535358202008025a064b1702d9298fee62dfeccc57d322a463ad55ca201256d01f62b45b2e1c21c12a064b1702d9298fee62dfeccc57d322a463ad55ca201256d01f62b45b2e1c21c10f867098504a817c809830334509435353535353535353535353535353535353535358202d98025a052f8f61201b2b11a78d6e866abc9c3db2ae8631fa656bfe5cb53668255367afba052f8f61201b2b11a78d6e866abc9c3db2ae8631fa656bfe5cb53668255367afb");
         }
+
+        // Generated during Hive devp2p
+        [TestCase(
+            "f8f78808a6f328496c6b92f8ecb87403f871f86c870c72dd9d5e883e800107830186a09400000000000000000000000000000000000000008080c001c001a00e0f68ba5a5f7820c9b47f4388b542f55849114944b6ac20d9f14cc2e3aa0368a00ad549ecdcc4756e5f05f6364ded164a1b7d69424d232ea8f29c35420efb39c4c0c0c0b87403f871f86c870c72dd9d5e883e010107830186a09400000000000000000000000000000000000000008080c001c080a0cd2109f56cec3c639c72e2d407e85eb2e54a2a6c4cd94cafe251b62ad1dbb723a068e1fee4a81ffccb9720b8a342f2cb6278570917132e9f639339b778f2da7169c0c0c0"
+        )]
+        public void Deserialize(string hex)
+        {
+            PooledTransactionsMessageSerializer serializer = new();
+
+            serializer.Deserialize(Convert.FromHexString(hex));
+        }
     }
 }

src/Nethermind/Nethermind.Serialization.Rlp/Rlp.cs

@@ -1179,9 +1179,7 @@ public void DecodeBloomStructRef(out BloomStructRef bloom)
             public ReadOnlySpan<byte> PeekNextItem()
             {
                 int length = PeekNextRlpLength();
-                ReadOnlySpan<byte> item = Read(length);
-                Position -= item.Length;
-                return item;
+                return Peek(length);
             }
 
             public readonly bool IsNextItemNull()

src/Nethermind/Nethermind.Serialization.Rlp/TxDecoders/BlobTxDecoder.cs

@@ -144,8 +144,7 @@ protected override void EncodePayload(Transaction transaction, RlpStream stream,
     private static void DecodeShardBlobNetworkWrapper(Transaction transaction, RlpStream rlpStream)
     {
         ProofVersion version = ProofVersion.V0;
-        var startingRlp = rlpStream.PeekNextItem();
-        if (startingRlp.Length is 1)
+        if (!rlpStream.IsSequenceNext())
         {
             version = (ProofVersion)rlpStream.ReadByte();
             if (version > ProofVersion.V1)
@@ -164,8 +163,7 @@ private static void DecodeShardBlobNetworkWrapper(Transaction transaction, RlpSt
     private static void DecodeShardBlobNetworkWrapper(Transaction transaction, ref Rlp.ValueDecoderContext decoderContext)
     {
         ProofVersion version = ProofVersion.V0;
-        var startingRlp = decoderContext.PeekNextItem();
-        if (startingRlp.Length is 1)
+        if (!decoderContext.IsSequenceNext())
         {
             version = (ProofVersion)decoderContext.ReadByte();
             if (version != ProofVersion.V1)