unify native modals

app/views/templates/new.html.erb

@@ -1,5 +1,5 @@
 <%= render 'shared/turbo_modal', title: @base_template ? t('clone_template') : t('new_document_template') do %>
-  <div class="<%= 'px-4' if turbo_native_app? %>">
+  <div style="<%= 'padding-inline: 18px' if turbo_native_app? %>">
     <%= render 'templates/file_form' %>
   </div>
 <% end %>