[2.3.0] Checkmk Werk 16445 created: HW/SW Inventory: Improve displaying retention information

[//]: # (werk v2) # HW/SW Inventory: Improve displaying retention information key | value ---------- | --- date | 2024-01-24T11:35:45+00:00 version | 2.3.0b1 class | fix edition | cre component | inv level | 1 compatible | yes Fix missing retention information in views with HW/SW inventory columns. Do not display retention icon if retention information is valid but not outdated.