Add exc_info=True to the _logger.warning() call in the per-handler
exception block of ReactiveEventBus.emit(). The handler already logged
error=str(exc) (the exception message text), but omitted the traceback.
With exc_info=True structlog now forwards the full traceback to the
configured log output, giving developers the diagnostic detail needed
to debug subscriber failures in production.
Remove the @tdd_expected_fail tag from the traceback scenario in
features/tdd_event_bus_exception_swallow.feature so that both TDD
scenarios (#988) run as normal regression guards.
Fix TDD tags in robot/tdd_e2e_implicit_init.robot: replace incorrect
tdd_bug/tdd_bug_1023 tags with the canonical tdd_issue/tdd_issue_1023/
tdd_expected_fail tags so the tdd_expected_fail_listener properly
inverts results while bug #1023 remains open.
ISSUES CLOSED: #988
Luis Mendes
