fix(editor): Allow "mailto:" in links

Author: kulla

packages/editor/src/plugins/text/components/link/edit-mode/link-overlay-edit-mode.tsx

@@ -66,6 +66,7 @@ export function LinkOverlayEditMode({
     if (
       cleanUrl.startsWith('/') ||
       cleanUrl.startsWith('#') ||
+      cleanUrl.startsWith('mailto:') ||
       cleanUrl.startsWith('http://') ||
       cleanUrl.startsWith('https://')
     ) {