moo.shell.tests.test_prompt_lifecycle.test_pre_run_flushes_pending_connect_output_with_osc133

moo.shell.tests.test_prompt_lifecycle.test_pre_run_flushes_pending_connect_output_with_osc133()

The pre_run callback flushes _pending_connect_output before the prompt renders, so the on-connect look is visible to the user.