examples: Fix implicit includes after legacy code removal

examples/bluetooth/blufi/main/blufi_security.c

@@ -15,6 +15,7 @@
 #include "esp_event.h"
 #include "esp_log.h"
 #include "nvs_flash.h"
+#include "esp_random.h"
 #include "esp_bt.h"
 
 #include "esp_blufi_api.h"

examples/wifi/espnow/main/espnow_example_main.c

@@ -20,6 +20,7 @@
 #include "freertos/semphr.h"
 #include "freertos/timers.h"
 #include "nvs_flash.h"
+#include "esp_random.h"
 #include "esp_event.h"
 #include "esp_netif.h"
 #include "esp_wifi.h"

tools/test_apps/protocols/mdns/main/mdns_test.c

@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 #include <string.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
 #include "mdns.h"
 #include "esp_log.h"
 #include "esp_netif.h"