Fix `pairedItem` in combination with pinned data

Editor assessment

The subject is technically precise: pairedItem misbehaved when combined with pinned data, and backticks aid readability. The fix type and editor scope are accurate. The body duplicates the subject verbatim behind an emoji, adding nothing about how pinned data corrupted the pairing or what the correction does. The PR reference is well-formed. Hygiene is clean. For an internal-mechanics bug like this, a body explaining the corruption path would have real teaching value; its absence leaves a valid but shallow restatement-driven message.