message: fix(protocol-designer): revert changes to source_well / dest_well constants
  this created an unintended breaking change for PD files in application-data, for no good reason!
diff: @@ -19,8 +19,8 @@ import blowout from './commandCreators/atomic/blowout'
  import {AIR} from '@opentrons/components'
  export {AIR}
  -export const SOURCE_WELL_BLOWOUT_DESTINATION: 'SOURCE_WELL' = 'SOURCE_WELL'
  -export const DEST_WELL_BLOWOUT_DESTINATION: 'DEST_WELL' = 'DEST_WELL'
  +export const SOURCE_WELL_BLOWOUT_DESTINATION: 'source_well' = 'source_well'
  +export const DEST_WELL_BLOWOUT_DESTINATION: 'dest_well' = 'dest_well'
  export function repeatArray<T> (array: Array<T>, repeats: number): Array<T> {
  return flatMap(range(repeats), (i: number): Array<T> => array)
  