Fix not focusing choice inputs (#11919)

Author: JamesNK

src/Aspire.Dashboard/Components/Dialogs/InteractionsInputDialog.razor.cs

@@ -3,6 +3,7 @@
 
 using Aspire.Dashboard.Model.Interaction;
 using Aspire.Dashboard.Model.Markdown;
+using Aspire.Dashboard.Model.Otlp;
 using Aspire.Dashboard.Resources;
 using Aspire.DashboardService.Proto.V1;
 using Microsoft.AspNetCore.Components;
@@ -91,6 +92,10 @@ protected override Task OnAfterRenderAsync(bool firstRender)
                 {
                     numberInput.FocusAsync();
                 }
+                else if (firstInputElement is FluentInputBase<SelectViewModel<string>> selectInput)
+                {
+                    selectInput.FocusAsync();
+                }
             }
         }