fix: unescape Gutenberg title value

issue #1495

Author: eteubert

client/src/lib/wordpress.ts

@@ -2,5 +2,6 @@ import { get } from 'lodash'
 
 export const store = get(window, ['wp', 'data'], null)
 export const media = get(window, ['wp', 'media'], null)
+export const htmlEntities = get(window, ['wp', 'htmlEntities'], null)
 export const postTitleInput: HTMLInputElement | null = document.querySelector('input[name="post_title"]')
 export const postTitleListener = (cb: (title: string) => any) => postTitleInput?.addEventListener('change', event => cb(get(event, ['target', 'value'])))

client/src/sagas/wordpress.sagas.ts

@@ -36,7 +36,9 @@ function* wordpressGutenbergUpdate() {
   yield put(
     wordpressStore.update({
       prop: 'title',
-      value: wordpress.store.select('core/editor').getEditedPostAttribute('title'),
+      value: wordpress.htmlEntities.decodeEntities(
+        wordpress.store.select('core/editor').getEditedPostAttribute('title')
+      ),
     })
   )
 }