Implement milestone 2 route navigation

RpgRoller/Components/Pages/PlayPage.razor.cs

@@ -1,29 +1,8 @@
 using System.Diagnostics.CodeAnalysis;
-using Microsoft.AspNetCore.Components;
-using Microsoft.AspNetCore.WebUtilities;
 
 namespace RpgRoller.Components.Pages;
 
 [ExcludeFromCodeCoverage]
 public partial class PlayPage
 {
-    private Task OnLoggedOutAsync(string? message)
-    {
-        if (string.IsNullOrWhiteSpace(message))
-        {
-            Navigation.NavigateTo("/login", forceLoad: true);
-            return Task.CompletedTask;
-        }
-
-        var query = new Dictionary<string, string?>
-        {
-            ["message"] = message,
-            ["kind"] = message.Contains("expired", StringComparison.OrdinalIgnoreCase) ? "error" : "success"
-        };
-
-        Navigation.NavigateTo(QueryHelpers.AddQueryString("/login", query), forceLoad: true);
-        return Task.CompletedTask;
-    }
-
-    [Inject] private NavigationManager Navigation { get; set; } = null!;
 }