Downtime -> Unknown is not ignored

[adaevitncar]

Describe the bug

Configuring a service which is part of the business process with a downtime and then retrieving UNKNOWN results from the service (e.g. no connection to Icinga Agent) will result in a "unknown" color and state of the business process.

To Reproduce

1. Create a business process e.g. containing of two existing services
2. Configure a downtime for one of the services
3. Submit check results (usually 3 times to get hard state) for the service which is in downtime
4. Compare the state of the business process.

Expected behavior

During a configured downtime of a service this should be ignored. The business process should not switch to unknown.

Your Environment

Include as many relevant details about the environment you experienced the problem in

• Icinga Web 2 version and modules (System - About): 2.12.5
• Web browser used: Firefox, Chrome, Edge
• Icinga 2 version used (icinga2 --version): r2.15.1-1
• PHP version used (php --version): 8.2.29
• Server operating system and version: Debian 12