Checkmk Werk 15663: Single-metric dashlets: Fix crash when setting fixed data range in time units

ID: 15663 Title: Single-metric dashlets: Fix crash when setting fixed data range in time units Component: metrics Level: 1 Class: Bug fix Version: 2.3.0b1 When attempting to configure <i>Data range</i> > <i>Fixed range</i> in time units (<i>Timespan or Duration in seconds</i>) for single-metric dashlets such as gauges, the default value (100 s) lead to a crash when saving: C+: The parameter "type_p_display_range_0_3_0_days" is not an integer. C-: Users could still fill in integer values manually and successfully save the dashlet configuration. As of this werk, also the default value can be saved without an error message.