修复流水号缓存服务的并行错误；

修复输出线程没有捕获异常的严重错误；

MesETL.App/Services/Seq/SeqService.cs

@@ -1,3 +1,4 @@
+using System.Collections.Concurrent;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;
 using System.Text;
@@ -11,7 +12,7 @@ namespace MesETL.App.Services.Seq;
 public class SeqService
 {
     private readonly string _connectionString;
-    private readonly Dictionary<SeqConfig, long> _cachedSequence;
+    private readonly ConcurrentDictionary<SeqConfig, long> _cachedSequence;
 
     public IReadOnlyDictionary<SeqConfig, long> CachedSequence => _cachedSequence;
 
@@ -24,7 +25,7 @@ public class SeqService
         };
         _connectionString = builder.ConnectionString;
 
-        _cachedSequence = new Dictionary<SeqConfig, long>();
+        _cachedSequence = new ConcurrentDictionary<SeqConfig, long>();
     }
 
     private async Task<long> UpdateSequenceID(string name,int step,long max,bool recycle, int add)
@@ -99,9 +100,9 @@ public class SeqService
     /// 移除一个缓存的流水号
     /// </summary>
     /// <param name="config"></param>
-    public void RemoveCachedSeq(SeqConfig config)
+    public bool RemoveCachedSeq(SeqConfig config)
     {
-        _cachedSequence.Remove(config);
+        return _cachedSequence.Remove(config, out _);
     }
     
     /// <summary>