message: fix(protocol-designer): close step form when edit pipettes
  Because saved step forms may be changed by editing pipettes, close the active unsaved step form to
  avoid adverse symptoms after pipette change.
diff: @@ -37,6 +37,9 @@ export const editPipettes = (payload: EditPipettesFields) =>
  {}
  )
  + // NOTE: this clears out currently selected step form so that we're only updating savedForms
  + dispatch(steplistActions.cancelStepForm())
  +
  each(nextPipettesByMount, (nextPipette, mount) => {
  const prevPipette = prevPipettesByMount[mount]
  if ((prevPipette && prevPipette.id) !== (nextPipette && nextPipette.id)) {
  