react-spectrum

ea9f7b0e - test: use renamed DialogTester.getDialog() API after merge

test: use renamed DialogTester.getDialog() API after merge main renamed the DialogTester getters to methods (get dialog() -> getDialog()). The alertdialog aria-describedby test still used the old .dialog getter, which now returns undefined and fails the assertions. Match the getDialog() API already used elsewhere in this file. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>