t.allows() returns false for extra keys, even with onUndeclaredKey("delete").

[TizzySaurus]

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🧩 Context

• ArkType version: arktype-2.0.0-rc.33
• TypeScript version (5.1+): 5.6.3
• Other context you think may be relevant (JS flavor, OS, etc.): N/A

🧑‍💻 Repro

const t = type({foo: "string"}).onUndeclaredKey("delete");
console.log(t.allows({foo: "hi", bar: 3)) // false