Werk #14120: Fix error while removing event console rule MKPs

Component	Setup
Title	Fix error while removing event console rule MKPs
Date	May 23, 2022
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0p1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 2.0.0p25 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

If MKPs with event console rules were removed, the error "list assignment index out of range" could occur.

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