[2.3.0] Checkmk Werk 16206 created: bi: Deleting a non-existent bi pack now returns a proper 404 response

Title: bi: Deleting a non-existent bi pack now returns a proper 404 response Class: fix Compatible: compat Component: rest-api Date: 1701432941 Edition: cre Level: 1 Version: 2.3.0b1 Previous this Werk, when trying to delete a non-existen bi pack would result in a 500 status error code. This Werk fixes that behavior and now returns a proper 404 response