Add issue comments for two features (#35756)

Author: tdykstra

aspnetcore/release-notes/aspnetcore-10.0.md

@@ -39,8 +39,12 @@ This section describes new features for minimal APIs.
 
 [!INCLUDE[](~/release-notes/aspnetcore-10/includes/MinimalAPIValidationRecordTypes.md)]
 
+[!INCLUDE[](~/release-notes/aspnetcore-10/includes/validation-with-problem.md)]
+
 [!INCLUDE[](~/release-notes/aspnetcore-10/includes/sse.md)]
 
+[!INCLUDE[](~/release-notes/aspnetcore-10/includes/validation-package-move.md)]
+
 ## OpenAPI
 
 This section describes new features for OpenAPI.

aspnetcore/release-notes/aspnetcore-10/includes/validation-package-move.md

@@ -0,0 +1,4 @@
+### Validation APIs moved to Microsoft.Extensions.Validation
+
+The validation APIs have moved to the `Microsoft.Extensions.Validation` namespace and NuGet package. This change makes the APIs usable outside of ASP.NET Core HTTP scenarios. The public APIs and behavior remain unchanged—only the package and namespace are different. Existing projects don't require code changes, as old references redirect to the new implementation.
+

aspnetcore/release-notes/aspnetcore-10/includes/validation-with-problem.md

@@ -0,0 +1,4 @@
+### Minimal API Validation integration with IProblemDetailsService
+<!-- https://github.com/dotnet/aspnetcore/pull/62066 -->
+
+Error responses from the validation logic for minimal APIs can now be customized by an `IProblemDetailsService` implementation provided in the application services collection (Dependency Injection container). This enables more consistent and user-specific error responses.