Werk #15827: Send metrics without perf data to InfluxDB backend

Component	Metrics system
Title	Send metrics without perf data to InfluxDB backend
Date	May 19, 2023
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0p2 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0p29 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

We erroneously rejected any metrics without performance data directed to the InfluxDB backend thus preventing also the logging of state change.

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