When using nativeType() Squish sends single key press events for
any char to type.
nativeType() does not wait until these events have been processed
which leads to complete useless time measurings inside
tst_tasks_handling as timestamps are taken too early if nativeType
had to be used - which happens when a native FileDialog is used.

Change-Id: I446de898fd99b2e169ca39bef1adb4306d6ee530
Reviewed-by: Robert Loehning <robert.loehning@qt.io>