message: fix(protocol-designer): restrict move labware to manual intervention step
  drag and drop to move labware was achievable any time the deck map was present, this branch makes it
  so that a user can only drag and drop to move labware from the manual intervention step
diff: @@ -101,7 +101,7 @@ const labwareSource = {
  slot: props.slot,
  containerId: props.containerId,
  }),
  - canDrag: (props) => !!props.containerId,
  + canDrag: (props) => !!props.containerId && props.isManualInterventionStep,
  }
  const collectLabwareSource = (connect, monitor) => ({
  connectDragSource: connect.dragSource(),
  @@ -281,7 +281,9 @@ class LabwareOnDeck extends React.Component<LabwareOnDeckProps> {
  // determine what overlay to show
  let overlay = null
  + let isManualInterventionStep = false
  if (selectedTerminalItem === START_TERMINAL_ITEM_ID && !addLabwareMode) {
  + isManualInterventionStep = true
  if (showNameOverlay) {
  overlay = (
  <NameThisLabwareOverlay
  @@ -309,7 +311,7 @@ class LabwareOnDeck extends React.Component<LabwareOnDeckProps> {
  : <EmptyDeckSlot slot={slot} />
  return (
  - <DragDropLabware {...{slot, highlighted, labwareOrSlot, overlay, containerId, swapSlotContents}} />
  + <DragDropLabware {...{slot, highlighted, labwareOrSlot, overlay, containerId, swapSlotContents, isManualInterventionStep}} />
  )
  }
  }
  