Werk #16306: Fix PDF export of host- and servicegroup views

Component	Reporting & availability
Title	Fix PDF export of host- and servicegroup views
Date	Jan 2, 2024
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.3.0b1 Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p18 Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0p38 Checkmk Pro, Checkmk Ultimate MT

If you exported a view with host- or servicegroup context, an error like "Error while rendering element type" was shown because of missing context information.

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