Let a listener's teardown run last and answer the sends the tests left hanging

todo.md

@@ -57,7 +57,6 @@ Rules the API follows:
 | Merged multipart DLRs including across a reconnect, reassembly bounds, per-send abort, the segment cap | `test/session-extras.test.ts` |
 | A draining `close()` and `unbind()`, bounded by `shutdownTimeout` or an abort | `test/session-extras.test.ts` |
 | Every runnable README example | `test/readme.test.ts` |
-| Teardown that survives a failing assertion, so a broken test reports rather than hangs | `test/teardown.ts` |
 | Receipt-versus-message classification by `esm_class` | `test/dlr.test.ts`, `test/session.test.ts` |
 | A listener that throws, or rejects, reaching `sessionError`/`serverError` rather than the process | `test/session.test.ts`, `test/error-from.test.ts` |
 | Cross-checked against node-smpp both ways and over a live session | `test/interop.test.ts` |