fix(plugin-search): reindex documents published in non-default locales

[PatrikKozak]

Reindex now selects and indexes documents based on per-locale publish status, so a document published only in a non-default locale is included.

Since _status is localized whenever a collection has localized fields under localization, a document can be published in de while still draft in en. The reindex handler had three gaps under that model:

1. Candidate selection filtered on _status: { equals: 'published' } at the default locale, so a document published only in a non-default locale was never selected.
2. Documents were fetched at the default locale, so each locale's _status was unavailable for per-locale gating.
3. Every locale of a selected document was synced, so draft locale content could be indexed alongside published content.

The handler now builds the published filter as an or across _status.<locale> for every configured locale, fetches candidates with locale: 'all', and only syncs the locales where the document is actually published.

[github-actions]

📦 esbuild Bundle Analysis for payload

This analysis was generated by esbuild-bundle-analyzer. 🤖
This PR introduced no changes to the esbuild bundle! 🙌