Report runs that stop at a failure as Failed

When a phase failed under the default stop-on-first-failure setting, the remaining phases were skipped and the whole run was reported as aborted, so a normal failing unit landed in the aborted bucket and a filter on Failed never found it.

• Fixed the outcome of a run stopped by a failed phase, which now reports Failed, or Timeout when the phase timed out, instead of Aborted. The skipped phases after the failure are unchanged.
• Kept Aborted for genuine interruptions: an operator stop or kill, and an explicit stop asked for by a phase. An operator kill during a passing phase used to report Error and now reports Aborted.