Non-case activities are allowed in case configuration activity types, but throwing fatal error when part of case config standard timeline

We're allowing non-case activity types (e.g. Email, Meeting, etc.) in the list of activity types for a case (in case config xml). However, if you include one of these in the standard timeline you get a fatal error:

"Activity type $theType, found in case configuration file, is not present in the database."

This is an oversight. Need to fix CRM_Case_XMLProcessor_Process::createActivity() to pass the "true" param for allActivityTypes.