Changes to List Screenings

added the optional property items/items/primary_sources_preview/items/ephemeris/anyOf[subschema #1: EphemerisMetadataWithRSO]/covariance_generated to the response with the 200 status

added the optional property items/items/secondary_sources_preview/items/ephemeris/anyOf[subschema #1: EphemerisMetadataWithRSO]/covariance_generated to the response with the 200 status

added the required property items/items/allow_synthetic_covariance to the response with the 200 status

added the optional property items/items/engine_used to the response with the 200 status

added the required property items/items/engine to the response with the 200 status

added the optional property items/items/primary_rsos_preview/items/auto_maneuvering to the response with the 200 status

added the optional property items/items/secondary_rsos_preview/items/auto_maneuvering to the response with the 200 status

added the optional property items/items/primary_sources_preview/items/propagation/anyOf[subschema #1: PropagationRead]/enable_discontinuities to the response with the 200 status

added the optional property items/items/secondary_sources_preview/items/propagation/anyOf[subschema #1: PropagationRead]/enable_discontinuities to the response with the 200 status