[LORA] Fix message without json not being transmitted (#1875)

Fix LoRa not processing message that are not JSON
Add also a non-JSON-message to the example

examples/LoraTemperature/platformio.ini

@@ -27,7 +27,7 @@ lib_deps =
 monitor_speed = 115200
 
 [env:heltec-wifi-lora-32]  ; Heltec ESP32 Board with SSD1306 display
-platform = ${com.esp32_platform}
+platform = espressif32
 board = heltec_wifi_lora_32
 framework = arduino
 lib_deps =