[FIX] website_slides: fix tour using image selector

Since "I don't know" image selection tour is broken as the current image
selector is quite different from the time this tour was run. Update it to
use an external URL as it seems we don't have any default image anymore.

Task-2780920 (eLearning: fix publisher tour)

Part-of: odoo/odoo#74171

addons/website_slides/static/src/tests/tours/slides_course_publisher.js

@@ -48,18 +48,25 @@ tour.register('course_publisher', {
     trigger: 'img.o_wslides_course_pict',
     run: 'dblclick',
 }, {
-    content: 'eLearning: click pâtissière',
-    trigger: 'img[title="s_company_team_image_4.png"]',
+    content: 'eLearning: click "Add URL" to trigger URL box',
+    trigger: '.o_upload_media_url_button',
 }, {
-    content: 'eLearning: is the pâtissière set ?',
+    content: 'eLearning: add a bioutifoul URL',
+    trigger: 'input.o_we_url_input',
+    run: 'text https://upload.wikimedia.org/wikipedia/commons/thumb/1/12/ThreeTimeAKCGoldWinnerPembrookeWelshCorgi.jpg/800px-ThreeTimeAKCGoldWinnerPembrookeWelshCorgi.jpg'
+}, {
+    content: 'eLearning: click "Add URL" really adding image',
+    trigger: '.o_upload_media_url_button',
+}, {
+    content: 'eLearning: is the Corgi set ?',
     trigger: 'img.o_wslides_course_pict',
     run: function () {
-        if ($('img.o_wslides_course_pict').attr('src').endsWith('s_team_member_4.png')) {
+        if ($('img.o_wslides_course_pict').attr('src').endsWith('GoldWinnerPembrookeWelshCorgi.jpg')) {
             $('img.o_wslides_course_pict').addClass('o_wslides_tour_success');
         }
     },
 }, {
-    content: 'eLearning: the pâtissière is set !',
+    content: 'eLearning: the Corgi is set !',
     trigger: 'img.o_wslides_course_pict.o_wslides_tour_success',
 }, {
     content: 'eLearning: save course edition',