[2.3.0] Checkmk Werk 17226 created: Fix ValueErrors when rendering graphs

[//]: # (werk v2) # Fix ValueErrors when rendering graphs key | value ---------- | --- date | 2024-08-05T18:01:16+00:00 version | 2.3.0p13 class | fix edition | cre component | multisite level | 1 compatible | yes In certain cases, rendering graphs crashed with a `ValueError` such as ``` Traceback (most recent call last): ... File "...", line 615, in _compute_labels_from_api raise ValueError((min_y, max_y)) ValueError: (0.0, 1.75828125) ```