The several public entities are authorized to and shall make or approve the payments required by Section 305(2) of the Uniform Act for litigation expenses actually incurred by any person, family, business, farm operation, or nonprofit organization which is a condemnee in any condemnation proceeding brought by an acquiring public entity to acquire real property for a federal-aid project, the cost of which is now or hereafter financed in whole or in part from federal funds allocated to an acquiring public entity, if the final judgment is that the acquiring public entity cannot acquire the real property by condemnation or the condemnation proceeding is formally abandoned by the acquiring public entity.