[2.3.0] Checkmk Werk 16141 created: Prevent notification in alert handler when notifications are disabled

Title: Prevent notification in alert handler when notifications are disabled Class: fix Compatible: compat Component: core Date: 1696417057 Edition: cre Knowledge: doc Level: 1 Version: 2.3.0b1 Previously, the alert handler would send notifications even if they were disabled through the master control. This issue has been resolved.