Detect and prevent filters on jsonb columns in SQL queries

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Motivation

Prevent queries like !169094 (merged) from re-occuring. See also #498685 (comment 2182179348), and https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/3803#note_2176872893 for details

Possible ideas

1. Use QueryAnalyzer on a sample of queries. Fail if there's more than a number of @> operators in the query.
2. Something else ?