Werk #14325: Fix custom host and service notes painter

Component	User interface
Title	Fix custom host and service notes painter
Date	Jun 3, 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 2.1.0p3 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

Since version 2.1.0 custom host and service notes were not shown in column "Custom host notes" and "Custom services notes".

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