fix: 修复银行汇率问题

Yi.Abp.Net8/module/bbs/Yi.Framework.Bbs.Domain/Managers/BankValue/RandownBankValueProvider.cs

@@ -1,15 +1,13 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using Volo.Abp.DependencyInjection;
+using Volo.Abp.DependencyInjection;
 
 namespace Yi.Framework.Bbs.Domain.Managers.BankValue
 {
     [Dependency(ReplaceServices = true)]
     internal class RandownBankValueProvider : IBankValueProvider, ITransientDependency
     {
+        public decimal StandardValue => 1000;
+
+
         public Task<decimal> GetValueAsync()
         {
             var currentNumber = new Random().Next(800, 1200);