refactor: simplify tray color/count updates #1760

Job	Run time
Prepare CI	2s
Lint App / biomejs	37s
Tests / Run Tests	2m 20s
Tests / SonarQube Cloud Analysis	57s
Build / Build Windows (electron-builder)	2m 11s
Build / Build macOS (electron-builder)	3m 3s
Build / Build Linux (electron-builder)	4m 16s
	13m 26s

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