Add PublicConstructors to DynamicallyAccessedMembers attribute in ValidatablePropertyInfo constructor

Co-authored-by: captainsafia <1857993+captainsafia@users.noreply.github.com>

Author: Copilot

src/Http/Http.Abstractions/src/Validation/ValidatablePropertyInfo.cs

@@ -21,7 +21,7 @@ public abstract class ValidatablePropertyInfo : IValidatableInfo
     /// Creates a new instance of <see cref="ValidatablePropertyInfo"/>.
     /// </summary>
     protected ValidatablePropertyInfo(
-        [param: DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)]
+        [param: DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.PublicConstructors)]
         Type declaringType,
         Type propertyType,
         string name,