[REV] web_editor: reactivate collaboration conflict detection

This reverts commit 77a8f7f9fded793948daf0ebef67c2674c7a79f8.

closes odoo/odoo#103809

X-original-commit: d3855e9852be6549b80c63fe6cf27ed647f74df1
Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>

addons/web_editor/static/src/js/wysiwyg/wysiwyg.js

@@ -2370,8 +2370,6 @@ const Wysiwyg = Widget.extend({
         }
     },
     _signalOffline: function () {
-        // todo: Fix later.
-        return;
         if (!this._isOnline) {
             return;
         }
@@ -2384,8 +2382,6 @@ const Wysiwyg = Widget.extend({
         });
     },
     _signalOnline: async function () {
-        // todo: Fix later.
-        return;
         clearTimeout(this._offlineTimeout);
         this._offlineTimeout = undefined;