title: SAPUI5 selection change event issue in multi select list
body: <p>I've a popover component and I added a multi-select list inside of it. I would like to set checked property to true for all items in case of the first item of list is selected. But selectionChange event works for every item's selection event. So, index value of the for loop always starts with zero. What should I do in this situation? Thanks for your suggestions.</p>
  
  <p>Here is my part of a code and screenshot of image;
  <a href="https://ibb.co/g8eFCx" rel="nofollow noreferrer">image url</a></p>
  
  <pre><code>new sap.m.List('statusTypesList', {
                              mode: 'MultiSelect',
                              selectedKeys: " ,1,2,3",
                              includeItemInSelection: true,
                              selectionChange: function(oEvent) {
                                  var keyValues = "";
                                  var itemArray = oEvent.oSource.getItems();
                                  if(itemArray[0].getSelected()==true){                                      
                                    for (var i = 0; i &lt; itemArray.length; i++) {
                                      oEvent.oSource.setSelectedItem(itemArray[i], true, true);
                                    }
                                  }
                              }                                
                          })
  </code></pre>