[ATTRIBUTES] Attribute retrieval doesn't retrieves TimeBasedValues (startDate, endDate)

[yasandu0505]

Problem

When reading an attribute, the system only retrieves the base attribute data. The TimeBasedValues are always empty, even though they were provided during attribute creation.

Example payload used during creation:

{
  "start": "",
  "end": "",
  "value": "data"
}

• Despite sending TimeBasedValues in the request, they are not persisted or returned when fetching the attribute.
• This results in incomplete attribute data during read operations.

Expected Behaviour

• The system should correctly persist TimeBasedValues during attribute creation.
• The system should correctly retrieve and return TimeBasedValues when reading attribute data.