Annotate_rows written in a 'random' position

Annotate_rows event are written in a 'random' position if one combines non transactional and transactional tables.

This can be seen in the test rpl.rpl_mixed_mixing_engines

This can be fixed by writing the Annotate_rows event into the non transactional cache if there are table maps that are not transactional. If not, write the event into the transactional cache.
This ensures that the Annotate_rows event is always written to the binary log before any table map events.