Remove the warning for undefined array key when a field is disabled on the dashboard

Problem/Motivation

Remove the warning

Warning: Undefined array key "field_private_profile" in opigno_dashboard_form_alter() (Zeile 481 in /app/web/modules/contrib/opigno_dashboard/opigno_dashboard.module) 

if the field is disabled.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes