Fix dashboard status

Backend/AuthHelpers.cs

@@ -18,6 +18,7 @@ public class AuthHelpers {
 	private static HttpResponseMessage MakeUpstreamAutheliaRequest(string cookie) {
 		var client = new HttpClient();
 		client.DefaultRequestHeaders.Add("cookie", $"authelia_session={HttpUtility.UrlDecode(cookie)}");
+		client.DefaultRequestHeaders.Add("x-forwarded-proto", "https");
 		var response = client.GetAsync($"http://127.0.0.1:9091/api/verify");
 		return response.Result;
 	}