moo.shell.tests.test_prompt_lifecycle.test_pre_run_flushes_pending_connect_output_without_osc133

moo.shell.tests.test_prompt_lifecycle.test_pre_run_flushes_pending_connect_output_without_osc133()

Without OSC 133 (e.g. classic MUD clients via IAC), the pending connect output must STILL be flushed — otherwise the room description is silently dropped and the user sees a bare prompt.