[FIX] document: updateEnv->redraw on not form view

In ac1e187e some unecessary code and RPC were removed by ignoring
attachments in the sidebar when they would never be shown.

But there was an regression since `updateEnv` function would not
longer call redraw (which is also called in _super function).

report: https://github.com/odoo/odoo/commit/ac1e187eea3#r30569171

related to opw-1865736
closes #27146

addons/document/static/src/js/document.js

@@ -50,10 +50,9 @@ Sidebar.include({
      * @override
      */
     updateEnv: function (env) {
-        if (this.hasAttachments) {
-            this.env = env;
-            this._updateAttachments().then(this._redraw.bind(this));
-        }
+        var _super = _.bind(this._super, this, env);
+        var def = this.hasAttachments ? this._updateAttachments() : $.when();
+        def.then(_super);
     },
 
     //--------------------------------------------------------------------------