[2.4.0] Checkmk Werk 17131 created: Apply temperature unit conversion to units/metrics from graphing API

[//]: # (werk v2) # Apply temperature unit conversion to units/metrics from graphing API key | value ---------- | --- date | 2024-07-29T12:32:34+00:00 version | 2.4.0b1 class | feature edition | cre component | multisite level | 1 compatible | yes With werk 15660 we introduced temperature unit conversion for metrics using the legacy unit `"c"` (degree celsius). This now applies to metrics from our new graphing API using the unit symbol `"°C"` or `"°F"`.