Checkmk Werk 14388: Allow dollar sign in AuthUser IDs in Livestatus

ID: 14388 Title: Allow dollar sign in AuthUser IDs in Livestatus Component: Livestatus Level: 1 Class: Bug fix Version: 2.2.0i1 Due to user ID sanitization in Livestatus (see Werk #14384), user IDs were not allowed to contain dollar signs (`$`). While such user IDs cannot be configured in Wato, they can be present as LDAP users. This Werk permits user IDs with dollar signs again.