fix: import Utils in Core.lua, remove index fallback in slot group profession matching

Author: bifferz

Core.lua

@@ -6,6 +6,7 @@ local addon = select(2, ...)
 local Data = addon.Data
 local Main = addon.Main
 local Checklist = addon.Checklist
+local Utils = addon.Utils
 local LibDataBroker = LibStub("LibDataBroker-1.1")
 local LibDBIcon = LibStub("LibDBIcon-1.0")