Use the minimum stopped version as the known committed version if all logs have responded

This is an optimization to copy less data during recoveries. We have to copy all versions between the known committed version and the recovery version before accepting new commits. Therefore in the special case that no logs have failed, we do not have to copy any data, because we know the recovery version is available on all of the old logs.

The issue names no files, tests, or entry points. Start by tracing recovery handling and how the known committed version and minimum stopped version are calculated; done means the no-failed-log case avoids unnecessary data copying while preserving recovery correctness.

Written by the indexing model from the issue text.