Werk #15484: Fix encoding of special characters in "Move to other folder"

Component	Setup
Title	Fix encoding of special characters in "Move to other folder"
Date	May 2, 2023
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.3.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.2.0b7 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.1.0p28 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Special characters were wrongly displayed in the "Move to other folder" dropdown. E.g. "&" as "&".

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