test("Object.isExtensible()", false);
    test("Object.isFrozen()", false);
    test("Object.isSealed()", false);

These does not throw an error if the argument is not an object.
https://tc39.es/ecma262/#sec-object.isextensible

Originally posted by @sapphi-red in #23483 (comment)

Creating an issue so that we don't forget about it