[FIX] portal: get all options when we reload the chatter

Before this commit, we use the defaultOptions and the options passed in
parameter of the `_setOptions` method, but we could have any unupdated
options in the `this.options`.

This commit creates a new object with the defaultOptions and the options
containing in `this.options` before update this object with `options`
given in parameter to have the new `this.options`.

task-2633229

closes #77156

X-original-commit: 5d1a36bdd530d4037d4f29dc607907d79d18dcc6

addons/portal/static/src/js/portal_chatter.js

@@ -122,7 +122,7 @@ var PortalChatter = publicWidget.Widget.extend({
      */
     _setOptions: function (options) {
         // underscorize the camelcased option keys
-        const defaultOptions = {
+        const defaultOptions = Object.assign({
             'allow_composer': true,
             'display_composer': false,
             'csrf_token': odoo.csrf_token,
@@ -137,7 +137,7 @@ var PortalChatter = publicWidget.Widget.extend({
             'pid': false,
             'domain': [],
             'two_columns': false,
-        };
+        }, this.options || {});
 
         this.options = Object.entries(options).reduce(
             (acc, [key, value]) => {