[FIX] base_setup: too long input placeholder.

The placeholder may be too long and not fit the screen. In this
situation it would not been shown at all. Using the `text-trauncate`
bootstrap class, the end of the text is truncated with an ellipsis in
case it doesn't fit on screen.

task-id-3098157

closes odoo/odoo#108696

Signed-off-by: Julien Castiaux <juc@odoo.com>

addons/base_setup/static/src/xml/res_config_invite_users.xml

@@ -3,7 +3,7 @@
     <div t-name='res_config_invite_users'>
         <p class="o_form_label">Invite New Users</p>
         <div class="d-flex">
-            <input class="o_user_emails o_input mt8" type="text" placeholder="Enter e-mail address"/>
+            <input class="o_user_emails o_input mt8 text-truncate" type="text" placeholder="Enter e-mail address"/>
             <button class="btn btn-primary o_web_settings_invite" data-loading-text="Inviting..."><strong>Invite</strong></button>
         </div>