Intl.Segmenter: Add some tests for the constructor.

...l402/Segmenter/constructor/constructor/locales-invalid.js

...ntl402/Segmenter/constructor/constructor/locales-valid.js

.../Segmenter/constructor/constructor/newtarget-undefined.js

...er/constructor/constructor/options-granularity-invalid.js

...nter/constructor/constructor/options-granularity-valid.js

...l402/Segmenter/constructor/constructor/options-invalid.js

...constructor/constructor/options-lineBreakStyle-invalid.js

...r/constructor/constructor/options-lineBreakStyle-valid.js

.../constructor/constructor/options-localeMatcher-invalid.js

...ntl402/Segmenter/constructor/constructor/options-order.js

...enter/constructor/constructor/options-throwing-getters.js

...ter/constructor/constructor/options-toobject-prototype.js

...402/Segmenter/constructor/constructor/options-toobject.js

...02/Segmenter/constructor/constructor/options-undefined.js

.../intl402/Segmenter/constructor/constructor/subclassing.js