Change some code base on review cmment.

framework/src/Volo.Abp.Ddd.Domain/Microsoft/Extensions/DependencyInjection/ServiceCollectionRepositoryExtensions.cs

@@ -84,11 +84,11 @@ public static class ServiceCollectionRepositoryExtensions
         bool replaceExisting,
         bool isReadOnlyRepository = false)
     {
-        var descriptor = ServiceDescriptor.Transient(serviceType, implementationType);
+        ServiceDescriptor descriptor;
 
         if (isReadOnlyRepository)
         {
-            services.AddTransient(implementationType);
+            services.TryAddTransient(implementationType);
             descriptor = ServiceDescriptor.Transient(serviceType, provider =>
             {
                 var repository = provider.GetRequiredService(implementationType);
@@ -96,6 +96,10 @@ public static class ServiceCollectionRepositoryExtensions
                 return repository;
             });
         }
+        else
+        {
+            descriptor = ServiceDescriptor.Transient(serviceType, implementationType);
+        }
 
         if (replaceExisting)
         {

framework/src/Volo.Abp.Ddd.Domain/Volo/Abp/Domain/Repositories/BasicRepositoryBase.cs

@@ -34,8 +34,7 @@ public abstract class BasicRepositoryBase<TEntity> :
 
     public ICancellationTokenProvider CancellationTokenProvider => LazyServiceProvider.LazyGetService<ICancellationTokenProvider>(NullCancellationTokenProvider.Instance);
 
-
+    public bool IsReadOnly { get; protected set; }
-    public bool IsReadOnly { get; set; } = false;
 
     protected BasicRepositoryBase()
     {

framework/test/Volo.Abp.Ddd.Tests/Volo/Abp/Domain/Repositories/RepositoryRegistration_Tests.cs

@@ -407,7 +407,7 @@ public class RepositoryRegistration_Tests
 
     public class MyTestAggregateRootWithDefaultPkEmptyRepository : IMyTestAggregateRootWithDefaultPkEmptyRepository
     {
-        public bool IsReadOnly { get; set; } = false;
+        public bool IsReadOnly { get; set; }
     }
 
     public class TestDbContextRegistrationOptions : AbpCommonDbContextRegistrationOptions