[FIX] web: Display archive action if active in view

Since ee5e972, "Achive" and "Unarchive" actions are
automatically displayed in the actions dropdown
if the record has an `active` field.
The "Archive" action is shown if `active=True`, and
"Unarchive" otherwise.

However, if the record has the `active` field but
it's not in the view, the form controller think
`active=False` because `undefined` is falsy.
Therefore, the "Unarchive" action is always shown.

If `active` is not in the view, neither "Archive" nor
"Unarchive" should be shown.

closes odoo/odoo#36551

Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>

addons/web/static/src/js/views/form/form_controller.js

@@ -186,7 +186,7 @@ var FormController = BasicController.extend({
         var self = this;
         if (this.hasSidebar) {
             var otherItems = [];
-            if (this.archiveEnabled) {
+            if (this.archiveEnabled && this.initialState.data.active !== undefined) {
                 var classname = "o_sidebar_item_archive" + (this.initialState.data.active ? "" : " o_hidden")
                 otherItems.push({
                     label: _t("Archive"),