Set __Host- prefix to session cookie

WE2-854

Signed-off-by: Raul Metsma <raul@metsma.ee>

src/WebEid.AspNetCore.Example/Startup.cs

@@ -83,7 +83,7 @@ public void ConfigureServices(IServiceCollection services)
 
             services.AddSession(options =>
             {
-                options.Cookie.Name = "WebEid.AspNetCore.Example.Session";
+                options.Cookie.Name = "__Host-WebEid.AspNetCore.Example.Session";
                 options.Cookie.SecurePolicy = CookieSecurePolicy.Always;
                 options.Cookie.SameSite = SameSiteMode.Strict;
                 options.IdleTimeout = TimeSpan.FromSeconds(60);