Create NullTenantResolveResultAccessor and move ITenantResolveResultAccessor to Volo.Abp.MultiTenancy package

framework/src/Volo.Abp.AspNetCore.MultiTenancy/Volo/Abp/AspNetCore/MultiTenancy/HttpContextTenantResolveResultAccessor.cs

@@ -1,13 +1,12 @@
-using JetBrains.Annotations;
-using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http;
 using Volo.Abp.DependencyInjection;
 using Volo.Abp.MultiTenancy;
 
 namespace Volo.Abp.AspNetCore.MultiTenancy
 {
+    [Dependency(ReplaceServices = true)]
     public class HttpContextTenantResolveResultAccessor : ITenantResolveResultAccessor, ITransientDependency
     {
-        [CanBeNull]
         public TenantResolveResult Result
         {
             get

framework/src/Volo.Abp.AspNetCore.MultiTenancy/Volo/Abp/AspNetCore/MultiTenancy/ITenantResolveResultAccessor.cs → framework/src/Volo.Abp.MultiTenancy/Volo/Abp/MultiTenancy/ITenantResolveResultAccessor.cs

@@ -1,9 +1,10 @@
-using Volo.Abp.MultiTenancy;
+using JetBrains.Annotations;
 
-namespace Volo.Abp.AspNetCore.MultiTenancy
+namespace Volo.Abp.MultiTenancy
 {
     public interface ITenantResolveResultAccessor
     {
+        [CanBeNull]
         TenantResolveResult Result { get; set; }
     }
 }

framework/src/Volo.Abp.MultiTenancy/Volo/Abp/MultiTenancy/NullTenantResolveResultAccessor.cs

@@ -0,0 +1,13 @@
+using Volo.Abp.DependencyInjection;
+
+namespace Volo.Abp.MultiTenancy
+{
+    public class NullTenantResolveResultAccessor : ITenantResolveResultAccessor, ISingletonDependency
+    {
+        public TenantResolveResult Result
+        {
+            get => null;
+            set { }
+        }
+    }
+}