Update Safari iOS data for api.HTMLInputElement.webkitdirectory (#22050)

This PR updates and corrects version values for Safari iOS/iPadOS for the `webkitdirectory` member of the `HTMLInputElement` API. The data comes from the [mdn-bcd-collector](https://mdn-bcd-collector.gooborg.com) project (v10.7.1).

_Check out the [collector's guide on how to review this PR](https://github.com/openwebdocs/mdn-bcd-collector#reviewing-bcd-changes)._

Tests Used: https://mdn-bcd-collector.gooborg.com/tests/api/HTMLInputElement/webkitdirectory

Additional Notes: Exact version was confirmed in BrowserStack via manual collector runs.

api/HTMLInputElement.json

@@ -2941,9 +2941,7 @@
             "safari": {
               "version_added": "11.1"
             },
-            "safari_ios": {
-              "version_added": false
-            },
+            "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
             "webview_android": "mirror"
           },