JSON Schema's boolean form is legal, but only `true` is harmless: it
constrains nothing, while `false` admits no value at all — so a field
declared with it can never be filled, and a required one makes the whole
branch unsatisfiable. Offering it contradicted every other faithfulness check
in the resolver, so such a branch is declined.
Signed-off-by: cliffhall <cliff@futurescale.com>
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