fix(protocol-designer): fix diffing function in makeTimelineMiddleware (

#15235)

Closes RQA-2752

Undefined object values were resulting in `false` returns for `substepsNeedsRecompute`, in turn resulting in not propogating up errors from moving labware conflicts. This PR uses deep object equality checks with lodash isEqual to properly return true if our robot timeline needs recomputing.

protocol-designer/src/timelineMiddleware/makeTimelineMiddleware.ts

@@ -1,3 +1,4 @@
+import isEqual from 'lodash/isEqual'
 import {
   getArgsAndErrorsByStepId,
   getOrderedStepIds,
@@ -21,7 +22,7 @@ const hasChanged = (
 ): boolean =>
   Object.keys(nextValues).some(
     (selectorKey: string) =>
-      nextValues[selectorKey] !== memoizedValues?.[selectorKey]
+      !isEqual(nextValues[selectorKey], memoizedValues?.[selectorKey])
   )
 
 const getTimelineArgs = (state: BaseState): GenerateRobotStateTimelineArgs => ({