fix(baseline): hide when feature status differs from BCD key status

[LeoMcA]

Summary

https://mozilla-hub.atlassian.net/browse/MP-874

Also see: #11546

Problem

• We maintain an manual blocklist of BCD keys to not display Baseline banners for, since they're potentially confusing
• Some BCD keys are part of a feature which has a higher status (i.e. Baseline low or high if the BCD key is not Baseline, or Baseline high if the BCD key is Baseline low), and so we display an incorrect banner on those pages:
  • e.g. https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrackAudioSourceNode

Solution

• Compute the per-key Baseline status for each page with compute-baseline, and if that status disagrees with the feature status, hide the banner

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How did you test this change?

• yarn
• yarn build --nohtml --locale en-us to generate client/build/en-us/build.json which can be compared to https://developer.mozilla.org/en-US/build.json
  • as expected (from the analysis in What to do with per-key Baseline statuses #11546) we have 2307 pages where the statuses are the same
• yarn dev
  • clicked around specific problem areas, like the Clipboard API
    • as expected, the banner appears on pages where the BCD table "agrees" with the banner:
      • http://localhost:3000/en-US/docs/Web/API/Clipboard/read
      • http://localhost:3000/en-US/docs/Web/API/Clipboard/readText
      • http://localhost:3000/en-US/docs/Web/API/Clipboard/write
    • and is hidden on pages where the BCD table "disagrees":
      • http://localhost:3000/en-US/docs/Web/API/Clipboard
      • http://localhost:3000/en-US/docs/Web/API/Clipboard/writeText
    • and is also hidden on pages with multiple BCD tables:
      • http://localhost:3000/en-US/docs/Web/API/Clipboard_API
  • ensured http://localhost:3000/en-US/docs/Web/API/MediaStreamTrackAudioSourceNode shows no banner

[caugner]

LGTM, just two nits and one comment.

PS: Didn't actually test.