[FIX] web_editor: always notify snippet option 'reset' after 'preview'

Some code was added to prevent notifying a 'reset' if there was no
'preview' before. Unfortunately, checking "if there was a 'preview'
before" cannot be done properly so some 'reset' were stopped while they
should not have. This commit simply removes the code which is in fact
not needed.

closes odoo/odoo#44499

Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/web_editor/static/src/js/editor/snippets.options.js

@@ -339,13 +339,9 @@ const UserValueWidget = Widget.extend({
             return;
         }
 
-        // Don't notify a reset update if the widget was not previewed before.
-        const isPreviewed = this.isPreviewed();
-        if (previewMode === 'reset' && !isPreviewed) {
-            return;
-        }
         // In the case we notify a change update, force a preview update if it
         // was not already previewed
+        const isPreviewed = this.isPreviewed();
         if (!previewMode && !isPreviewed) {
             this.notifyValueChange(true);
         }