settings: Do not allow last active value to wrap randomly.

We do not allow the "Last active" values in users list to
wrap at random breakpoints and instead wrap at end of the
words.

web/styles/settings.css

@@ -401,7 +401,8 @@ select.settings_select {
 
 .user_role,
 .profile_field_type,
-.bot_type {
+.bot_type,
+.last_active {
     word-break: normal;
 }