Checkmk Werk 12288: Prometheus: Fix javascript error when configuring PromQL queries

ID: 12288 Title: Prometheus: Fix javascript error when configuring PromQL queries Component: Setup Level: 1 Class: Bug fix Version: 2.1.0i1 When trying to configure the option "Service creation using PromQL queries" in the Prometheus special agent a javascript popup appeared with an error message like "cmk.valuespecs.transfer_context_onchange() ...".