feat(search): restrict search results to the current track (CLI vs core docs)

[haarchri]

Since 2.3 the CLI is versioned and released separately from Crossplane core, so the two tracks have diverged (CLI is at v2.5, core at v2.4). The version facet from #1051 can't tell them apart: core v2.4 and CLI v2.4 pages both index as version:2.4, so search results leaked across tracks.

• Add a track facet filter: CLI pages (/cli/**) filter on track:cli, everything else (core, knowledge base, contributing) on track:core, ANDed with the existing version filter.
• Fix the "older version" search banner on CLI pages: it compared against the core latest (2.4), so CLI v2.5 pages wrongly showed it. It now uses cliLatest and links to /cli/v2.5/.

Algolia is already configured: the crawler tags records with track, a full recrawl has run, and filterOnly(track) is set on the index.

Check after the Crawl the track field is available:

Check on CLI Page Search:

Check that the Track FacetFilter is set during Search:

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[jbw976]

this looks reasonable, thanks for digging into this issue! go ahead and merge if you're feeling good about your testing.

i do have one question about the behavior i'm seeing on the preview site, and i'm not sure if it'll just start working once we merge, or we still don't have something configured correctly yet:

when searching for trace in the CLI docs area, e.g. on https://deploy-preview-1142--crossplane.netlify.app/cli/latest/command-reference/, no results newer than v2.2 are shown, even though crossplane resource trace is definitely on the newer pages.

is something preventing v2.3+ CLI pages from being indexed?

[haarchri]

the command-reference page was too big after crawl > 100KB - so i updated the cralwer - looks now as expected