Can't use System.Linq Queryable extension methods

[tonnydourado]

Trying to use IEnumerable.AsQueryable causes a compilation error, even after adding @using System.Linq.

Reproduction:

• Snippet: https://try.mudblazor.com/snippet/wYmKEnGwLAhKlUnI
• Code:

  @using System.Linq 
  <MudText Typo="Typo.h6">MudBlazor is @Text</MudText>
  <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="ButtonOnClick">@ButtonText</MudButton>
   
  @code {
      public string Text { get; set; } = "????";
      public string ButtonText { get; set; } = "Click Me";
      public int ButtonClicked { get; set; }
   
      void ButtonOnClick()
      {
          IEnumerable<string> data = new List<string>() { "a", "b", "c" };
          data = data.Select(x => x.ToUpper()).ToArray(); // This works
          data = data.AsQueryable().Select(x => x.ToUpper()).ToArray(); // this doesn't
          ButtonClicked += 1;
          Text = $"Awesome x {ButtonClicked} ({string.Join(",", data)})";
          ButtonText = "Click Me Again";
      }
  }

• Expected: Adding @using System.Linq should fix the compilation error
• What actually happens: It doesn't.
• Browser: Firefox 148.0.2 (64-bit), on windows, normal mode (not incognito/private)
• DotNET version: 10.0.3
• MudBlazor version: v9.1.0