Fix Intl.Segmenter branding.js

Based on: https://github.com/tc39/test262/blob/44fc8165d54de9c9f0128f70eda56bdcb5dde82c/implementation-contributed/v8/intl/segmenter/segment-iterator-ownPropertyDescriptor.js

test/intl402/Segmenter/iterator/branding.js

@@ -7,6 +7,9 @@ description: Verifies the behavior for the iterators.
 features: [Intl.Segmenter]
 ---*/
 
+let seg = new Intl.Segmenter();
+let segmentIterator = seg.segment('text');
+let prototype = Object.getPrototypeOf(segmentIterator);
 const otherReceivers = [
     1, 123.45, undefined, null, "string", true, false,
     Intl, Intl.Segmenter, Intl.Segmenter.prototype,