Add Korean Japanese and English user interfaces

tests/e2e/layout.mjs

@@ -31,7 +31,10 @@ try {
       ? { executablePath: process.env.HOP_BROWSER_EXECUTABLE }
       : {}),
   });
-  const context = await browser.newContext({ viewport: { width: 1280, height: 1000 } });
+  const context = await browser.newContext({
+    locale: 'ko-KR',
+    viewport: { width: 1280, height: 1000 },
+  });
   const page = await context.newPage(),
     errors = [];
   page.on('pageerror', (error) => errors.push(error.message));