ES|QL: Add tests using semantic search and lookup join #123504
Merged
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part of #122832
8.18 and 9.0 had an issue where using semantic search with lookup join returned no results.
we don't have this issue for main or 8.x, but we also don't have any tests for this case.
here we add the same tests we added in the 8.18/9.0 fix to catch any future regression.