feat: bulk add fields (#1683)

## Demo

![CleanShot 2025-03-04 at 02 17
47](https://github.com/user-attachments/assets/2cffaee3-9933-49e9-bdab-eadfd4c35030)

---------

Co-authored-by: Lucas Smith <me@lucasjamessmith.me>

packages/ui/primitives/document-flow/field-item-advanced-settings.tsx

@@ -311,6 +311,7 @@ export const FieldAdvancedSettings = forwardRef<HTMLDivElement, FieldAdvancedSet
               />
             ))
             .otherwise(() => null)}
+
           {errors.length > 0 && (
             <div className="mt-4">
               <ul>
@@ -323,6 +324,7 @@ export const FieldAdvancedSettings = forwardRef<HTMLDivElement, FieldAdvancedSet
             </div>
           )}
         </DocumentFlowFormContainerContent>
+
         <DocumentFlowFormContainerFooter className="mt-auto">
           <DocumentFlowFormContainerActions
             goNextLabel={msg`Save`}