Werk #16727: Prevent updating a folder with an empty title

Component	REST API
Title	Prevent updating a folder with an empty title
Date	Apr 8, 2025
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.5.0b1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.4.0b5 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.3.0p31 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

Before this Werk, it was possible to update the title of a folder to an empty string. This Werk introduces an additional check that the new title (if provided) contains at least one character.

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