Werk #18089: Notification test: Respect exceptions in timeperiods

Component	Notifications
Title	Notification test: Respect exceptions in timeperiods
Date	Aug 29, 2025
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.4.0p12 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.3.0p37 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

If you used "Exceptions (from weekdays)" in timeperiods this could lead to wrong match results while testing notifications.

Note: The processing of notification was not affected.

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