fix: [Bug] .17 - Notify defaults quasarframework#2322

Author: rstoenescu

src/plugins/notify.js

@@ -3,7 +3,7 @@ import uid from '../utils/uid.js'
 import clone from '../utils/clone.js'
 import { isSSR } from './platform.js'
 
-let defaults
+let defaults = {}
 
 const positionList = [
   'top-left', 'top-right',