feat: captcha example (#4330)

* feat: captcha example

* fix: fix lint errors

* chore: event handling and methods

* chore: add accessibility features ARIA labels and roles

---------

Co-authored-by: vince <vince292007@gmail.com>

playground/src/locales/langs/en-US.json

@@ -71,6 +71,9 @@
       },
       "ellipsis": {
         "title": "EllipsisText"
+      },
+      "captcha": {
+        "title": "Captcha"
       }
     }
   }

playground/src/locales/langs/zh-CN.json

@@ -71,6 +71,9 @@
       },
       "ellipsis": {
         "title": "文本省略"
+      },
+      "captcha": {
+        "title": "验证码"
       }
     }
   }