Update salobj BaseCsc to publish the errorCode event with errorCode=0, report="", etc. when going out of fault state.

Also update the fault method to publish a CRITICAL-level message with the error code and report. This trivial change should allow LOVE to simplify the unified log window to get rid of the error code event data. Something like:

self.log.critical(f"Fault! errorCode=\{code\}, reason=\{reason!r\}")