Scenario: Server paging and filtering are enabled for RadMultiSelect.

1. Filter to an item that is not present on the default list of items and select it.
2. Expand the drop-down by clicking on the Input element.

Currently, the Selected item is not displayed within the drop-down even if it is still selected in the control.

The expected behavior is to have all selected items in the dropdown even when they are not part of the currently filtered set of items.