🐛 Properly mark 'auth attribute path' required

The field was missing the styling on the label that indicates it's a
required field.

For prefill, this field is always required. For registration, it's
required when the option to update the existing object is toggled.

src/openforms/js/components/admin/form_design/registrations/objectsapi/LegacyConfigFields.js

@@ -135,6 +135,7 @@ const LegacyConfigFields = ({apiGroupChoices}) => {
           objecttypeUuid={objecttype}
           objecttypeVersion={objecttypeVersion}
           disabled={!updateExistingObject}
+          required={updateExistingObject}
         />
       </Fieldset>
 

src/openforms/js/components/admin/form_design/registrations/objectsapi/V2ConfigFields.js

@@ -158,6 +158,7 @@ const V2ConfigFields = ({apiGroupChoices}) => {
           objecttypeUuid={objecttype}
           objecttypeVersion={objecttypeVersion}
           disabled={!updateExistingObject}
+          required={updateExistingObject}
         />
       </Fieldset>
 

src/openforms/js/components/admin/form_design/variables/prefill/objects_api/ObjectsAPIFields.js

@@ -240,7 +240,7 @@ const ObjectsAPIFields = () => {
           objectsApiGroup={objectsApiGroup}
           objecttypeUuid={objecttypeUuid}
           objecttypeVersion={objecttypeVersion}
-          style={{maxWidth: '10em'}}
+          required
         />
       </Fieldset>
 

src/openforms/js/components/admin/forms/objects_api/AuthAttributePath.js

@@ -17,6 +17,7 @@ const AuthAttributePath = ({
   objecttypeUuid,
   objecttypeVersion,
   disabled = false,
+  required = false,
 }) => {
   const intl = useIntl();
   const {csrftoken} = useContext(APIContext);
@@ -66,6 +67,7 @@ const AuthAttributePath = ({
           />
         }
         disabled={disabled}
+        required={required}
       >
         <TargetPathSelect
           name={name}
@@ -86,6 +88,7 @@ AuthAttributePath.propTypes = {
   objecttypeUuid: PropTypes.string,
   objecttypeVersion: PropTypes.number,
   disabled: PropTypes.bool,
+  required: PropTypes.bool,
 };
 
 export default AuthAttributePath;