[FIX] web,board: a kanban button action should trigger that action

Before this commit, when having a kanban within a dashboard and clicking on an action button,
the action was not triggered, instead, the board form view triggered 'save' on the board model
leading to a server side traceback

After this commit, the action button triggers the demanded one and only this one.

OPW 805707

closes #22191
closes #22371

addons/board/static/tests/dashboard_tests.js

@@ -417,5 +417,57 @@ QUnit.test('non-existing action in a dashboard', function (assert) {
     form.destroy();
 });
 
+QUnit.test('clicking on a kanban\'s button should trigger the action', function (assert) {
+    assert.expect(2);
+
+    var form = createView({
+        View: FormView,
+        model: 'board',
+        data: this.data,
+        arch: '<form string="My Dashboard">' +
+                '<board style="2-1">' +
+                    '<column>' +
+                        '<action name="149" string="Partner" view_mode="kanban" id="action_0_1"></action>' +
+                    '</column>' +
+                '</board>' +
+            '</form>',
+        archs: {
+            'partner,false,kanban':
+                '<kanban class="o_kanban_test"><templates><t t-name="kanban-box">' +
+                    '<div>' +
+                    '<field name="foo"/>' +
+                    '</div>' +
+                    '<div><button name="sitting_on_a_park_bench" type="object">Eying little girls with bad intent</button>' +
+                    '</div>' +
+                '</t></templates></kanban>',
+        },
+        intercepts: {
+            execute_action: function (event) {
+                var data = event.data;
+                assert.strictEqual(data.env.model, 'partner', "should have correct model");
+                assert.strictEqual(data.action_data.name, 'sitting_on_a_park_bench',
+                    "should call correct method");
+            }
+        },
+
+        mockRPC: function (route) {
+            if (route === '/board/static/src/img/layout_1-1-1.png') {
+                return $.when();
+            }
+            if (route === '/web/action/load') {
+                return $.when({res_model: 'partner', view_mode: 'kanban', views: [[false, 'kanban']]});
+            }
+            if (route === '/web/dataset/search_read') {
+                return $.when({records: [{foo: 'aqualung'}]});
+            }
+            return this._super.apply(this, arguments);
+        }
+    });
+
+    form.$('.o_kanban_test').find('button:first').click();
+
+    form.destroy();
+});
+
 
 });

addons/web/static/src/js/views/kanban/kanban_controller.js

@@ -229,6 +229,7 @@ var KanbanController = BasicController.extend({
      * @param {OdooEvent} event
      */
     _onButtonClicked: function (event) {
+        event.stopPropagation();
         var self = this;
         var attrs = event.data.attrs;
         var record = event.data.record;