Safari 18 added serializable parameter to Element.attachShadow() options (#26748)

Update Safari data for api.Element.attachShadow.options_serializable_parameter

This PR updates and corrects version values for Safari (Desktop and iOS/iPadOS) for the `attachShadow.options_serializable_parameter` member of the `Element` API. The data comes from the [mdn-bcd-collector](https://mdn-bcd-collector.gooborg.com) project (v10.13.0).

Tests Used: https://mdn-bcd-collector.gooborg.com/tests/api/Element/attachShadow/options_serializable_parameter

Author: queengooborg

api/Element.json

@@ -3013,7 +3013,7 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "18"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",