bs4 fix applications dropdown clipping (#4318)

add data-boundary to fix clipping on small tables

app/views/datatables/shared/_dropdown.html.erb

@@ -1,7 +1,7 @@
 <% if @bs4 %>
   <% row_actions_id = local_assigns[:row_actions_id].present? ? local_assigns[:row_actions_id] : nil %>
   <div class="dropdown <%= 'pull-right' if !defined? pull_left %>" id="<%= row_actions_id %>">
-    <button class="btn outline p-2 px-3 dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" id="dropdown_for_<%= row_actions_id %>">
+    <button class="btn outline p-2 px-3 dropdown-toggle" type="button" data-boundary="window" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" id="dropdown_for_<%= row_actions_id %>">
       <span class="pr-1"><%= l10n("actions") %></span>
     </button>
     <div class="actions-dropdown dropdown-menu <%= local_assigns[:dropdown_class] %> shadow-sm py-0" aria-labelledby="dropdown_for_<%= row_actions_id %>">