HIVE-26407: Do not compute statistics if the compaction fails

[InvisibleProgrammer]

Ticket: HIVE-26407

What changes were proposed in this pull request? We collect compaction statistics even if compaction fails. We should avoid that behavior.

Does this PR introduce any user-facing change? No

How was this patch tested? Added a new test in TestWorker called testDoesntGatherStatsIfCompactionFails