[WIP] Update to .net11.0

[Copilot]

Thanks for the feedback on #64627. I've created this new PR, which merges into #64627, to address your comment. I will work on the changes and keep this PR's description up to date as I make progress.

Original PR: #64627
Triggering comment (#64627 (comment)):

@copilot add reference items to the following projects in order to fix their CS1061, CS0012, CS0234 and CS0246 errors:

src\Antiforgery\samples\MinimalFormSample\MinimalFormSample.csproj
src\Azure\samples\AzureAppServicesHostingStartupSample\AzureAppServicesHostingStartupSample.csproj
src\Azure\samples\AzureAppServicesSample\AzureAppServicesSample.csproj
src\Components\Components\test\Microsoft.AspNetCore.Components.Tests.csproj
src\Components\Endpoints\test\Microsoft.AspNetCore.Components.Endpoints.Tests.csproj
src\Components\Samples\BlazorServerApp\BlazorServerApp.csproj
src\Components\Samples\BlazorUnitedApp\BlazorUnitedApp.csproj
src\Components\Server\test\Microsoft.AspNetCore.Components.Server.Tests.csproj
src\Components\WebAssembly\Samples\HostedBlazorWebassemblyApp\Server\HostedBlazorWebassemblyApp.Server.csproj
src\Components\benchmarkapps\Wasm.Performance\Driver\Wasm.Performance.Driver.csproj

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[dotnet-policy-service]

Greetings! You've submitted a PR that modifies code that is shared with https://github.com/dotnet/runtime . Please make sure you synchronize this code with the changes in that repo!