[FIX] web: pivot controller handles correct views attribute

From a recent action manager refactoring (https://github.com/odoo/odoo/commit/32b8cec5361174c92c45a4975d4e02f1fb448aa2),
the attribute 'views' in viewOptions is now structured as follow:

viewOptions: {
    action: {
        views: [{
            viewID: 1,
            type: 'list',
        }],
    }
}

instead of this:

viewOptions: {
    action: {
        views: [[1, 'list']],
    }
}

The pivot view was not updated correctly, so now it should be correct.

addons/web/static/src/js/views/pivot/pivot_view.js

@@ -101,9 +101,10 @@ var PivotView = AbstractView.extend({
             _findView(params.action && params.action.views, 'form'),
         ];
         function _findView(views, viewType) {
-            return _.find(views, function (view) {
-                return view[1] === viewType;
-            }) || [false, viewType];
+            var view = _.find(views, function (view) {
+                return view.type === viewType;
+            });
+            return [view ? view.viewID : false, viewType];
         }
     },
 });

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

@@ -152,7 +152,12 @@ QUnit.module('Views', {
             },
             viewOptions: {
                 action: {
-                    views: [[2, 'form'], [5, 'kanban'], [false, 'list'], [false, 'pivot']],
+                    views: [
+                        { viewID: 2, type: 'form' },
+                        { viewID: 5, type: 'kanban' },
+                        { viewID: false, type: 'list' },
+                        { viewID: false, type: 'pivot' },
+                    ],
                 },
                 context: {someKey: true, search_default_test: 3},
                 title: 'Partners',