[IMP] mail: appropriate padding around chatbox search bar

Set appropriate padding around the chatbox search bar and aligned it with the
header content.

Task-2844934

closes odoo/odoo#91900

Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>

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

@@ -31,7 +31,7 @@
                     />
                 </t>
                 <t t-if="chatWindow.newMessageAutocompleteInputView">
-                    <div class="o_ChatWindow_newMessageForm d-flex align-items-center mt-1 p-1">
+                    <div class="o_ChatWindow_newMessageForm d-flex align-items-center m-3">
                         <span class="o_ChatWindow_newMessageFormLabel flex-grow-0 flex-shrink-0 mr-2">
                             To:
                         </span>