feat: add local-staging FULLOTA2 flow

ql-application/threadx/interface/custom_app/http_aofei.c

@@ -517,7 +517,9 @@ exit:
 
 int http_ota_fw_download(char *url)
 {
-	return ql_fullfota_app_start(url);
+	(void)url;
+	RLOGE("legacy HTTP polling FULLOTA1 is disabled; use MQTT FULLOTA2 command\r\n");
+	return -1;
 }
 
 typedef struct recv_buf