[REQUEST]: Allow users to add new criticality level for entities.

[abhishekbhatia1710]

Description

We are introducing new asset criticality level called as unassigned.
This feature will allow users to remove an entity from risk scoring calculations.
The documentation page : https://www.elastic.co/guide/en/security/current/asset-criticality.html

Resources

This feature was introduced in : elastic/kibana#195393

Context about the change can be referenced at : elastic/kibana#208884

Which documentation set does this change impact?

Elastic On-Prem and Cloud (all)

Feature differences

This feature is identical in all deployment methods

What release is this request related to?

N/A

Collaboration model

The documentation team

Point of contact.

Main contact: @abhishekbhatia1710

Stakeholders:

[natasha-moore-elastic]

Confirmed that this enhancement is already live in serverless, and will be released in 9.1.