Add option value for new pseudoconstant
@mattwire @artfulrobot there is now an option group for the values that can be used in civicrm_entity_batch.entity_table.
From 5.42 on you will need an option value in this option group to support how giftaid uses this table
In order to support earlier versions you could use ensureOptionGroupExists with the same parameters as in dev/core@b6d0c5b8 or conditionally add the option value if it DOES exist