Fixing how published fact-checks are filtered for bot preview query.

[caiosba]

Description

Previously, both published and unpublished fact-checks were returned by the Smooch Bot query and then re-filtered in PostgreSQL. The problem with this approach was that if the query returned three results - two published and one unpublished - only the two published fact-checks would remain after re-filtering. This change also makes the code behave more similarly to the real tipline search.

Fixes: CV2-5572.

How has this been tested?

Manually.

Checklist

• I have performed a self-review of my own code
• I have added unit and feature tests, if the PR implements a new feature or otherwise would benefit from additional testing
• I have added regression tests, if the PR fixes a bug
• I have added logging, exception reporting, and custom tracing with any additional information required for debugging
• I considered secure coding practices when writing this code. Any security concerns are noted above.
• I have commented my code in hard-to-understand areas, if any
• I have made needed changes to the README
• My changes generate no new warnings
• If I added a third party module, I included a rationale for doing so and followed our current guidelines

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ JSON::ParserError: unexpected token at ' app/models/concerns/alegre_v2.rb in parse_response View Issue

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