Fixed ReturnUrl not working

src/Server/Views/Account/Login.cshtml

@@ -1,3 +1,4 @@
+@using Microsoft.Extensions.Primitives
 @using Server.Services
 @inject LocalizationService T
 @{
@@ -9,6 +10,10 @@
     <h1>Login</h1>
     <form asp-action="Login" method="post" class="mt-4" style="max-width: 400px; margin: auto;">
         <div class="form-group mb-3">
+            @if (Context.Request.Query.TryGetValue("ReturnUrl", out StringValues returnUrl))
+            {
+                <input type="hidden" name="ReturnUrl" value="@(returnUrl)" />
+            }
             <label for="username" class="form-label">@T["Username"]</label>
             <input autofocus type="text" class="form-control" id="username" name="username" autocomplete="username" required>
         </div>