Extends test_build_event_handler_registers_reaction_and_card_processors
to assert that register_p2_im_chat_access_event_bot_p2p_chat_entered_v1
and register_p2_im_message_recalled_v1 are called when building the
event handler, matching the production registrations.
Also adds Fatty911 to scripts/release.py AUTHOR_MAP for credit on the
salvaged event-handler fix.