[INTERNAL] Table: fix popinChanged
[INTERNAL] Table: fix popinChanged

The popinChanged was not fired when columns are added via table perso
This case is now taken into account.
BCP: 2180078557

Change-Id: If6248dd0d8cbb230cedd4491c79bd9ed649428c6

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5