[FIX] mail: missing separator at end of emoji category bar

Before this commit, there was not visual separator between
end of emoji category bar and the rest of emoji picker header.

Task-3045141

closes odoo/odoo#104767

X-original-commit: d4b654c9322fd7c9f5a3bb94fa41d20fc5d8c998
Signed-off-by: Louis Wicket (wil) <wil@odoo.com>
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>

addons/mail/static/src/components/emoji_category_bar_view/emoji_category_bar_view.xml

@@ -2,7 +2,7 @@
 <templates xml:space="preserve">
 
     <t t-name="mail.EmojiCategoryBarView" owl="1">
-        <div class="o_EmojiCategoryBarView d-flex flex-shrink-0 overflow-auto" t-attf-class="{{ className }}" t-ref="root">
+        <div class="o_EmojiCategoryBarView d-flex flex-shrink-0 overflow-auto border-end" t-attf-class="{{ className }}" t-ref="root">
             <t t-foreach="emojiCategoryBarView.emojiCategoryViews" t-as="emojiCategoryView" t-key="emojiCategoryView.localId">
                 <EmojiCategoryView record="emojiCategoryView"/>
             </t>