validate

Validates an InputDescriptorV2.

This method conducts several checks to ensure the integrity of the input descriptor:

1. Ensures that the input descriptor's ID is not empty.

2. Validates that the name, if present, is not empty.

3. Checks that the purpose, if provided, is not empty.

4. For each field in the input descriptor's constraints, it validates the field using FieldV2Validator.

Throws