Test "test__201__channel_serial_is_cleared_whenever_a_channel_entered_into_detached_suspended_or_failed_state" fails a lot

[maratal]

Actually it's "test__200__channel_serial_is_updated_whenever_a_protocol_message_with_either_message_presence_or_attached_actions_is_received_in_a_channel" which is above the test in the title. One of it's closures is being called already after test finishes and thus failing currently executing test ("splitDone called more than 3 times").

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