Expose the `validator` service itself.

Resolve #17596

framework/src/Volo.Abp.FluentValidation/Volo/Abp/FluentValidation/AbpFluentValidationConventionalRegistrar.cs

@@ -24,6 +24,7 @@ public class AbpFluentValidationConventionalRegistrar : DefaultConventionalRegis
     {
         return new List<Type>()
             {
+                type,
                 typeof(IValidator<>).MakeGenericType(GetFirstGenericArgumentOrNull(type, 1)!)
             };
     }

framework/test/Volo.Abp.FluentValidation.Tests/Volo/Abp/FluentValidation/ApplicationService_FluentValidation_Tests.cs

@@ -103,6 +103,17 @@ public class ApplicationService_FluentValidation_Tests : AbpIntegratedTest<Appli
         output.ShouldBe("444");
     }
 
+
+    [Fact]
+    public void Should_Add_Validators_To_DI()
+    {
+        var validator = ServiceProvider.GetService<IValidator<MyMethodInput>>();
+        validator.GetType().ShouldBe(typeof(MyMethodInputValidator));
+
+        validator = ServiceProvider.GetService<MyMethodInputValidator>();
+        validator.GetType().ShouldBe(typeof(MyMethodInputValidator));
+    }
+
     [DependsOn(typeof(AbpAutofacModule))]
     [DependsOn(typeof(AbpFluentValidationModule))]
     public class TestModule : AbpModule