[FIX] website_slides: display the right number of records found on the search button

Steps:
- Go to website -> courses.
- Make a search.

Issue:
Whatever there are records found or not, on the search button we see "(0) found".

Reason:
In the method responsible of search ``slides_channel_all_values()`` we don't pass ``search_count``
to the dict to be rendered.

opw-3544856

closes odoo/odoo#144781

X-original-commit: c6afb4441c6d416258634ae9c09353e336f50dcc
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>

addons/website_slides/controllers/main.py

@@ -438,7 +438,7 @@ class WebsiteSlides(WebsiteProfile):
         )
         search = post.get('search')
         order = self._channel_order_by_criterion.get(post.get('sorting'))
-        _, details, fuzzy_search_term = request.website._search_with_fuzzy("slide_channels_only", search,
+        search_count, details, fuzzy_search_term = request.website._search_with_fuzzy("slide_channels_only", search,
             limit=1000, order=order, options=options)
         channels = details[0].get('results', request.env['slide.channel'])
 
@@ -461,6 +461,7 @@ class WebsiteSlides(WebsiteProfile):
             'search_slide_category': slide_category,
             'search_my': my,
             'search_tags': search_tags,
+            'search_count': search_count,
             'top3_users': self._get_top3_users(),
             'slugify_tags': self._slugify_tags,
             'slide_query_url': QueryURL('/slides/all', ['tag']),