Werk #15926: Fix background color of pending state

Component	BI
Title	Fix background color of pending state
Date	Jun 16, 2023
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.3.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p5 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

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