[FIX] web: grouped list as grouped list as child

In grouped editable list, get rid of the groups
Edit one record in the editable list
In a M2O, click on search more

In search's list, group by a field
Expand a group in the search's list

Before this commit, it crashes because the event was propagated
onto the first main list

After this commit, it doesn't crash and the group is expanded

OPW 2064156

closes odoo/odoo#36383

Signed-off-by: Lucas Perais (lpe) <lpe@odoo.com>

addons/web/static/src/js/views/list/list_controller.js

@@ -579,6 +579,7 @@ var ListController = BasicController.extend({
      * @param {OdooEvent} event
      */
     _onToggleGroup: function (event) {
+        event.stopPropagation();
         this.model
             .toggleGroup(event.data.group.id)
             .then(this.update.bind(this, {}, {keepSelection: true, reload: false}));

addons/web/static/tests/views/list_tests.js

@@ -3268,6 +3268,57 @@ QUnit.module('Views', {
         list.destroy();
     });
 
+    QUnit.test('grouped list with another grouped list parent, click unfold', function (assert) {
+        assert.expect(3);
+        this.data.bar.fields = {
+            cornichon: {string: 'cornichon', type: 'char'},
+        };
+
+        var rec = this.data.bar.records[0];
+        // create records to have the search more button
+        var newRecs = [];
+        for (var i=0; i<8; i++) {
+            var newRec = _.extend({}, rec);
+            newRec.id = 10 + i;
+            newRec.cornichon = 'extra fin';
+            newRecs.push(newRec)
+        }
+        this.data.bar.records = newRecs;
+
+        var list = createView({
+            View: ListView,
+            model: 'foo',
+            data: this.data,
+            arch: '<tree editable="top"><field name="foo"/><field name="m2o"/></tree>',
+            groupBy: ['bar'],
+            archs: {
+                'bar,false,list': '<tree><field name="cornichon"/></tree>',
+                'bar,false,search': '<search><filter context="{\'group_by\': \'cornichon\'}" string="cornichon"/></search>',
+            },
+        });
+
+        list.update({groupBy: []});
+
+        testUtilsDom.click(list.$('.o_data_cell:eq(0)'));
+
+        testUtilsDom.click(list.$('.o_selected_row .o_data_cell .o_field_many2one input'));
+        $('.ui-autocomplete .ui-menu-item:contains("Search More")').mouseenter().click();
+
+        assert.containsOnce($('body'), '.modal-content');
+
+        assert.containsNone($('body'), '.modal-content .o_group_name', 'list in modal not grouped');
+
+        testUtilsDom.click($('body .modal-content button:contains(Group By)'));
+
+        testUtilsDom.click($('body .modal-content .o_menu_item a:contains(cornichon)'));
+
+        testUtilsDom.click($('body .modal-content .o_group_header'));
+
+        assert.containsOnce($('body'), '.modal-content .o_group_open');
+
+        list.destroy();
+    });
+
     QUnit.test('field values are escaped', function (assert) {
         assert.expect(1);
         var value = '<script>throw Error();</script>';