Flattens locales before versioning published docs #1415

Editor assessment

The subject states the fix — locales are flattened before versioning published docs — but appends the bare ticket number '#1415' to the subject line, where a Refs footer belongs, and the sentence-like phrasing takes a beat to parse. The fix type fits a persistence correction, and the affected flow is named. No body explains what went wrong with unflattened versions being snapshotted, which is the interesting part of the change. No footers exist to hold the reference properly. Understandable, but the junk placement and thin context hold it at acceptable.