[FIX] website: properly mark carousel test tour as a test tour

Commit [1] and its forward-ports introduced a test tour (properly added
in assets_tests) but was not declared as a test one. Meaning that if you
were in debug=tests, you were able to follow a strange tour not meant
for user testing.

[1]: https://github.com/odoo/odoo/commit/3c194faa930b0d3a537ca8b893b2c0442b5464e7

closes odoo/odoo#80362

X-original-commit: 732addec9452813a404823f28703d54d37a6b87f
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/website/static/tests/tours/carousel_content_removal.js

@@ -3,6 +3,7 @@
 import tour from 'web_tour.tour';
 
 tour.register("carousel_content_removal", {
+    test: true,
     url: "/",
 }, [{
     trigger: "a[data-action=edit]",