Use new URL rather than encodeURI for document field validation (#9613)

Co-authored-by: Daniel Cousens <[email protected]>
Co-authored-by: Emma Hamilton <[email protected]>

Author: dcousens

.changeset/fix-document-uris.mx

@@ -0,0 +1,5 @@
+---
+"@keystone-6/fields-document": patch
+---
+
+Use `new URL` rather than `encodeURI` for encoding URLs safely

packages/fields-document/src/DocumentEditor/isValidURL.ts

@@ -1,5 +1,8 @@
 import { sanitizeUrl } from '@braintree/sanitize-url'
 
 export function isValidURL(url: string) {
-  return url === sanitizeUrl(url) || url === encodeURI(sanitizeUrl(url))
+  return (
+    url === sanitizeUrl(url) ||
+    new URL(url, 'https://a').toString() === new URL(sanitizeUrl(url), 'https://a').toString()
+  )
 }