[BUG #8581] resetHiddenRows now reset correct rows data

Hi,

In qx.ui.table.model.Filtered, resetHiddenRows() does not reset correct data the second time if data has changed between first and second call. See the bug report to understand better : http://bugs.qooxdoo.org/show_bug.cgi?id=8591
this.__fullArr need to be always updated in hideRows() method because data may have changed since last . So the condition line 351 should not exists