feat: Module shotdown and cancels the initialization token

Author: colinin

aspnet-core/framework/auditing/LINGYUN.Abp.AuditLogging.Elasticsearch/LINGYUN/Abp/AuditLogging/Elasticsearch/AbpAuditLoggingElasticsearchModule.cs

@@ -35,4 +35,10 @@ public async override Task OnApplicationInitializationAsync(ApplicationInitializ
         var initializer = rootServiceProvider.GetRequiredService<IAuditLoggingIndexInitializer>();
         await initializer.InitializeAsync(_cancellationTokenSource.Token);
     }
+
+    public override Task OnApplicationShutdownAsync(ApplicationShutdownContext context)
+    {
+        _cancellationTokenSource.Cancel();
+        return Task.CompletedTask;
+    }
 }