Further Combobox cleanup:
Further Combobox cleanup:

1. Don't set this.list until the <d-list> is fully initialized.
2. Since _initList() should be called every time this.list is set, just call it from refreshRendering().
No need to call it directly from attachedCallback().

EAlexRojas/deliteful,kitsonk/deliteful,harbalk/deliteful,cjolif/deliteful,kitsonk/deliteful,EAlexRojas/deliteful,brunano21/deliteful,cjolif/deliteful,harbalk/deliteful,brunano21/deliteful