Timeline block - search for multilang

Covered by newly created Behat test. Manual testing is below   Initial setup Create a course called "Course with advanced name" with start date is "Yesterday". Create a choice activity called "Choice with advanced name" with open date is "Yesterday" and close date is "Tomorrow". Create a student account and enrol to the created course. Testing Log in as student account. Navigate to Dashboard. Add Timeline block to the page if necessary. Click Filter timeline by date and select All. Type In the search field with the value "Course advanced". Verify that you will see "Choice with advanced name" in the Timeline block. Type In the search field with the value "Choice advanced". Verify that you will see "Choice with advanced name" in the Timeline block.