Components.AI net11 package depends on unavailable .NET 12 package

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Describe the bug

`Microsoft.AspNetCore.Components.AI` version `0.1.0-preview.1.26459.102` is published to NuGet.org, but its `net11.0` dependency group references:

```xml

```

`Microsoft.AspNetCore.Components.Web` version `12.0.0-alpha.1.26459.102` is not available on NuGet.org. As a result, consumers cannot restore the Components AI package using only NuGet.org and must either add a .NET shipping feed or force a package downgrade.

This surfaced while preparing danroth27/AgenticUI#5 as a clone-and-run sample for an upcoming .NET Blog post. The application targets `net11.0` and builds successfully when the dependency is explicitly pinned to `Microsoft.AspNetCore.Components.Web` `11.0.0-rc.1.26425.128`, but that requires suppressing `NU1605` and `NU1510`, which is not appropriate guidance for a best-practices sample.

Package metadata identifies source commit `4ec325806886c5d729b5abc3515c4a4052f313e9` in `dotnet/dotnet`.

@kotlarmilos, could you please take a look since you worked on the Components AI package versioning and release cadence?

### Expected behavior

The `net11.0` Components AI package should depend on a compatible .NET 11 `Microsoft.AspNetCore.Components.Web` version available from NuGet.org, allowing restore without custom feeds or dependency-downgrade suppressions.

### Steps to reproduce

1. Configure NuGet.org as the only package source and use an empty global packages folder.
2. Create or use a `net11.0` ASP.NET Core project.
3. Add:

```xml

```

4. Run `dotnet restore`.

Restore attempts to resolve `Microsoft.AspNetCore.Components.Web` `12.0.0-alpha.1.26459.102`, which is unavailable from NuGet.org.

### .NET version

`11.0.100-rc.1.26425.128`

### Anything else?

The package itself and its other dependency, `Microsoft.Extensions.AI.Abstractions` `10.6.0`, are available from NuGet.org. The problematic dependency is visible directly in the published package's `.nuspec`.