Werk #14324: Fix validation of tag IDs

Component	Setup
Title	Fix validation of tag IDs
Date	Jun 2, 2022
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0p2 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

It was possible to use tag IDs already used by other tag groups or auxiliary tags.

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