Werk #17061: Show correct host alias in context of test notifications

Component	Notifications
Title	Show correct host alias in context of test notifications
Date	Jul 4, 2024
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.4.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.3.0p11 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

The hostname was shown instead of the alias in the context of a test notification, even if an alias was defined for the host.

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