s:date ignores LocalTime

After upgrading from v5 to v6 I got an error with s:date not working with java.sql.Time. Since WW-5272 is not yet released, I thought I will convert java.sql.Time to LocalTime by simply changing the ognl expression in my s:date tags. 

For example from 

<s:date format="HH:mm" name="sqlTime"/>

to

<s:date format="HH:mm" name="sqlTime.toLocalTime()"/>

This way there was no UnsupportedOperationException, but it turns out that nothing happens. In the class org.apache.struts2.components.Date there is no case for LocalTime and we end up with a log message LocalTime isn't supported!.

There should be support for both java.sql.Time (as per WW-5272) and for LocalTime with similar behaviour.