Werk #15929: Fix wrong creation of topics on update

Component	User interface
Title	Fix wrong creation of topics on update
Date	Jul 26, 2023
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.1.0p31 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

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