[FIX] website: disable products carousel slide in edit mode

We have a public widget that disables automatic slides on carousels when
the user is in edit mode (see `registry.slider`). Unfortunately, since
[this commit], the automatic slide of the carousel in the "Products"
block was not disabled in edit mode. This was because a
`widget_start_request` was made without specifying whether the user is
in edit mode. When it's not specify, we consider that we are not in edit
mode. As a result, the public widget no longer stopped the carousel
because it considered that it was not in edit mode. This commit fixes
this problem by correcting `widget_start_request`.

Steps to reproduce the bug fixed by this commit:
- Have an ecommerce
- Edit a page
- Drop the "Products" block

=> If you wait a few seconds, the carousel moves, even though it
shouldn't as long as you're editing your site.

[this commit]: https://github.com/odoo/odoo/commit/7af099ccf1e5892513c1b0827553fe93614f2f07

task-3356629

closes odoo/odoo#127185

X-original-commit: 4231aca9665829673e29a027469471743dab16c4
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>
Signed-off-by: Guillaume Dieleman (gdi) <gdi@odoo.com>

addons/website/static/src/snippets/s_dynamic_snippet/000.js

@@ -176,7 +176,11 @@ const DynamicSnippet = publicWidget.Widget.extend({
             this.renderedContent = '';
         }
         this._renderContent();
-        this.trigger_up('widgets_start_request', {$target: this.$el.children(), options: {parent: this}});
+        this.trigger_up('widgets_start_request', {
+            $target: this.$el.children(),
+            options: {parent: this},
+            editableMode: this.editableMode,
+        });
     },
     /**
      * @private