[TrigServices,TrigSteeringEvent] Handle missing CTP fragment as event processing error
Don't treat missing CTP fragments as "framework" errors and instead treat them as "event" errors. In particular, do not abort the event loop after N occurrences of a missing CTP fragment and just always continue to the next event.
A helper function is added in OnlineErrorCode.h
to differentiate between "framework" and "event" error codes.
Closes ATR-25217