[FIX] mail: pass context from schedule activity

Problem is that while creating Opportunity from schedule activity at the
bottom of the activity view, context was not applied.
For Example, CRM > Pipeline, while creating opportunity that will create
a lead because context was not applied.
In this commit, context should be applied.

task-2072491

closes odoo/odoo#37139

Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>

addons/mail/static/src/js/views/activity/activity_controller.js

@@ -46,6 +46,7 @@ var ActivityController = BasicController.extend({
             title: _.str.sprintf(_t("Search: %s"), this.renderer.arch.attrs.string),
             no_create: !this.activeActions.create,
             disable_multiple_selection: true,
+            context: state.context,
             on_selected: function (record) {
                 var fakeRecord = self.renderer.getKanbanActivityData({}, record[0]);
                 var widget = new KanbanActivity(self, 'activity_ids', fakeRecord, {});