fix: allow super admin tenant-scoped role ops

src/Application/TakeoutSaaS.Application/Identity/Commands/DeleteRoleCommand.cs

@@ -8,4 +8,9 @@ namespace TakeoutSaaS.Application.Identity.Commands;
 public sealed record DeleteRoleCommand : IRequest<bool>
 {
     public long RoleId { get; init; }
+
+    /// <summary>
+    /// 租户 ID（空则取当前上下文）。
+    /// </summary>
+    public long? TenantId { get; init; }
 }