Werk #14460: Fix error on rule search

Component User interface
Title Fix error on rule search
Date Jun 27, 2022
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.0.0p27 2.2.0i1 2.1.0p5
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

Searching for e.g. "Group" or "Ineffective" could lead to an error message like "The selected element 'None' is not longer available.".

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