Evaluate whether one public/private key satisfies an authority object.
This mirrors the Layer 1 sign_state single-key semantics used for required
signatures: key weights are counted directly, account authorities recurse via
the supplied authority getter, and thresholds decide authorization.
Evaluate whether one public/private key satisfies an authority object.
This mirrors the Layer 1
sign_statesingle-key semantics used for required signatures: key weights are counted directly, account authorities recurse via the supplied authority getter, and thresholds decide authorization.