active PIT objects not found should be handled gracefully

any PIT object not found should be handled if needed gracefully. e.g. if change log events are put in the change log temp in the wrong order.

// Error: unable to evaluate command: Sourced file: inline evaluation of: `` loaderRunOneJob("CHANGE_LOG_changeLogTempToChangeLog");'' : Error invoking compiled command: : Error in compiled command: java.lang.RuntimeException: java.lang.RuntimeException: Active PITGroup with sourceId=effad2959db644789a216ff6d48b2b84 not found,
Problem in HibernateSession: HibernateSession (fb91ad2): new, notReadonly, READ_WRITE_NEW, notActiveTransaction, session (7afa253e)
g

or

gsh 11% loaderRunOneJob("CHANGE_LOG_changeLogTempToChangeLog")
// Error: unable to evaluate command: Sourced file: inline evaluation of: `` loaderRunOneJob("CHANGE_LOG_changeLogTempToChangeLog");'' : Error invoking compiled command: : Error in compiled command: java.lang.RuntimeException: java.lang.RuntimeException: Active PITStem with sourceId=12406a89fd934566ac263f64fea26615 not found,
Problem in HibernateSession: HibernateSession (2bc779ed): new, notReadonly, READ_WRITE_NEW, notActiveTransaction, session (4b8103a5)
g

or

gsh 0% loaderRunOneJob("CHANGE_LOG_changeLogTempToChangeLog")
// Error: unable to evaluate command: Sourced file: inline evaluation of: `` loaderRunOneJob("CHANGE_LOG_changeLogTempToChangeLog");'' : Error invoking compiled command: : Error in compiled command: java.lang.RuntimeException: java.lang.RuntimeException: Active PITMember with sourceId=c5c3a39cd7b84aada804b76c4641df5a not found,
Problem in HibernateSession: HibernateSession (70e04b5f): new, notReadonly, READ_WRITE_NEW, notActiveTransaction, session (658a2984)

etc