Autoprovision functionality not working as expected when configured at device/group level

Issue: Autoprovision functionality not working as expected when configured at device/group level.

Steps to reproduce:

1. Register a device with 'autoprovision' flag set to true:

{
"devices": [
   {
     "device_id":   "sensor001",
     "entity_name": "urn:ngsi-ld:Sensor:sensor001",
     "entity_type": "Sensor",
     "timezone":    "Europe/Berlin",
     "attributes": [
       { "object_id": "temperature", "name":"temperature", "type":"number"}
      ],
      "autoprovision":true
   }
 ]
}

2. Send measurement for this device with an extra measurement attribute. Sample measurement payload:

{
    "temperature":23.4,
    "humidity":40
}

Expected result: As "autoprovision" is "true" for this device, the new attribute "humidity" should get created in the Orion entity with its measurement value.
Actual result: "humidity" attibute is not getting created in Orion entity. HTTP status code 404 is returned. (Note: Measurement of "temperature" is getting updated in Orion though.)

I've identified potential cause of the issue:
https://github.com/telefonicaid/iotagent-node-lib/blob/8a6cbd1a8d4023f239195f1aa1534c75a487f139/lib/services/ngsi/entities-NGSI-v1.js#L243-L249

Below fix is required (line# 246)

    if (
        'autoprovision' in typeInformation &&
        /* jshint -W101 */
        typeInformation.autoprovision !== undefined  //This should be !== operator and not ===
            ? typeInformation.autoprovision === true
            : config.getConfig().appendMode === true
    ) {

Start at lib/services/ngsi/entities-NGSI-v1.js around lines 243-249 and reproduce the device-level autoprovision request with the temperature and humidity measurements shown. Verify that the configured autoprovision behavior creates humidity in the Orion entity and that the measurement no longer returns HTTP 404, while temperature continues to update.