fix 优化changeDb

Src/Dlhis.Sys/Identity/Services/Implements/UserService.cs

@@ -12,11 +12,9 @@ public class UserService : IUserService
 {
     private readonly IDbContext _dbContext;
 
-    public UserService(IDbContext dbContext, IConfiguration configuration)
+    public UserService(IDbContext dbContext)
     {
-        var identityConnection = configuration.GetSection("SqlSugarOptions:IdentityConnectionString").Value;
-        dbContext.Client.CurrentConnectionConfig.ConnectionString = identityConnection;
-        _dbContext = dbContext;
+        _dbContext = dbContext.ChangeDb("identity");
     }
 
     public async Task<Pagination<UserResponse>> GetPageAsync(UserPageRequest request)

Src/Dlhis.Sys/SqlSugarPack.cs

@@ -16,7 +16,7 @@ public class SqlSugarPack : BaseAppPack
 
             return new List<ConnectionConfig>
             {
-                 new ConnectionConfig
+                 new() 
                  {
                     ConfigId = "identity",