[IMP] website_forum: show icon in validation queue filter

before this commit, in the forum validation queue filter,
along with the text filter instead of icon some hard coded
value(圾) is shown as text.

* create a user with very minimum XP
* create a post from new user login
* from admin login, click validation queue in the
forum
* click on filter in the validation queue

after this commit, the text will be replaced with fa-font
icon, so that all filters will look similar.

closes odoo/odoo#123636

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

addons/website_forum/views/forum_forum_templates_moderation.xml

@@ -84,7 +84,7 @@
                                 <a class="nav-link spam_menu" id="country-tab" data-bs-toggle="tab" href="#spam_country" role="tab" aria-controls="spam_country" aria-selected="false"><i class="fa fa-flag"/> Country</a>
                             </li>
                             <li class="nav-item">
-                                <a class="nav-link spam_menu" id="character-tab" data-bs-toggle="tab" href="#spam_character" role="tab" aria-controls="spam_character" aria-selected="false">圾 Text</a>
+                                <a class="nav-link spam_menu" id="character-tab" data-bs-toggle="tab" href="#spam_character" role="tab" aria-controls="spam_character" aria-selected="false"><i class="fa fa-font"/> Text</a>
                             </li>
                         </ul>
                         <button type="button" class="btn-close align-self-start" data-bs-dismiss="modal"></button>