[FIX] website: fix wrong selector creation in clickOnSnippet tour util

Since [1], there would be a traceback due to a wrong DOM selector in the
`configurator_tour`.
Indeed, completing the configurator will activate the configurator_tour
asset which is calling a broken clickOnSnippet tour util to generate an
appropriate homepage tour.
It would end up with the following selector:
`o_website_preview[data-view-xmlid='website.homepage'] iframe #wrapwrap .#wrap > section:nth-child(2)`
See the `.#wrap` which is incorrect and make jQuery crash.

This is because [1] adapted the tour utils to the new WebsitePreview
client action, but the clickOnSnippet function was wrongly changed and
could now be generating wrong triggers selector.
It was creating invalid selectors as it was concatenating a `.` with the
provided string parameter which was basically a class without the `.`,
like `s_popup`, but not in all cases. A whole valid selector could also
be provided, meaning that concatenating it with a leading `.` would
result in incorrect selector.

Basically, this commit revert the change made on [1] in `clickOnSnippet`
to restore the code of [2] that was preventing the wrong selector
creation.

[1]: https://github.com/odoo/odoo/commit/99b50d18e220aedf14de806f4bf1b2d35c32de35
[2]: https://github.com/odoo/odoo/commit/e8a5af2e28a4724f86783746706cb59175f086bf

opw-3026167

closes odoo/odoo#103651

X-original-commit: 26c4e4a13b642e2856495a8c1f5a36afe3996c02
Signed-off-by: Romain Derie (rde) <rde@odoo.com>

addons/website/static/src/js/tours/tour_utils.js

@@ -171,9 +171,9 @@ function clickOnElement(elementName, selector) {
  * @param {*} position
  */
 function clickOnSnippet(snippet, position = "bottom") {
-    const snippetClass = snippet.id || snippet;
+    const trigger = snippet.id ? `#wrapwrap .${snippet.id}` : snippet;
     return {
-        trigger: `iframe #wrapwrap .${snippetClass}`,
+        trigger: `iframe ${trigger}`,
         extra_trigger: "body.editor_has_snippets",
         content: Markup(_t("<b>Click on a snippet</b> to access its options menu.")),
         position: position,