fix: propTypes warning

* the recordRestrictionGracePeriod property is a number. the object
  which it is in the beginning in python (timedelta object) is reduced to
  the days in https://github.com/inveniosoftware/invenio-app-rdm/blob/master/invenio_app_rdm/records_ui/templates/semantic-ui/invenio_app_rdm/records/deposit.html#L45

invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/AccessField/AccessRightField.js

@@ -104,7 +104,7 @@ AccessRightFieldCmp.propTypes = {
   showMetadataAccess: PropTypes.bool,
   community: PropTypes.object,
   record: PropTypes.object.isRequired,
-  recordRestrictionGracePeriod: PropTypes.object.isRequired,
+  recordRestrictionGracePeriod: PropTypes.number.isRequired,
   allowRecordRestriction: PropTypes.bool.isRequired,
 };
 
@@ -140,7 +140,7 @@ AccessRightField.propTypes = {
   labelIcon: PropTypes.string,
   isMetadataOnly: PropTypes.bool,
   record: PropTypes.object.isRequired,
-  recordRestrictionGracePeriod: PropTypes.object.isRequired,
+  recordRestrictionGracePeriod: PropTypes.number.isRequired,
   allowRecordRestriction: PropTypes.bool.isRequired,
 };
 

invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/AccessField/components/MetadataAccess.js

@@ -62,6 +62,6 @@ MetadataAccess.propTypes = {
   recordAccess: PropTypes.string.isRequired,
   communityAccess: PropTypes.string.isRequired,
   record: PropTypes.object.isRequired,
-  recordRestrictionGracePeriod: PropTypes.object.isRequired,
+  recordRestrictionGracePeriod: PropTypes.number.isRequired,
   allowRecordRestriction: PropTypes.bool.isRequired,
 };