Update DataProtectionKey to use DynamicDependency (dotnet#43207)

Author: JamesNK

src/DataProtection/EntityFrameworkCore/src/DataProtectionKey.cs

@@ -1,17 +1,11 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System.Diagnostics.CodeAnalysis;
-
 namespace Microsoft.AspNetCore.DataProtection.EntityFrameworkCore;
 
 /// <summary>
 /// Code first model used by <see cref="EntityFrameworkCoreXmlRepository{TContext}"/>.
 /// </summary>
-// DataProtectionKey.Id is not used anywhere. Add DynamicallyAccessedMembers to prevent it from being trimmed.
-// Note that in the future EF may annotate itself to include properties automatically, and the annotation here could be removed.
-// Fixes https://github.com/dotnet/aspnetcore/issues/43187
-[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)]
 public class DataProtectionKey
 {
     /// <summary>

src/DataProtection/EntityFrameworkCore/src/EntityFrameworkCoreXmlRepository.cs

@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Xml.Linq;
 using Microsoft.AspNetCore.DataProtection.Repositories;
@@ -24,6 +25,10 @@ public class EntityFrameworkCoreXmlRepository<TContext> : IXmlRepository
     /// </summary>
     /// <param name="services"></param>
     /// <param name="loggerFactory">The <see cref="ILoggerFactory"/>.</param>
+    // DataProtectionKey.Id is not used anywhere. Add DynamicDependency to prevent it from being trimmed.
+    // Note that in the future EF may annotate itself to include properties automatically, and the annotation here could be removed.
+    // Fixes https://github.com/dotnet/aspnetcore/issues/43187
+    [DynamicDependency(DynamicallyAccessedMemberTypes.PublicProperties, typeof(DataProtectionKey))]
     public EntityFrameworkCoreXmlRepository(IServiceProvider services, ILoggerFactory loggerFactory)
     {
         if (loggerFactory == null)