fix(protocol-designer): fix presaved absorbance reader step form type (…

…#17444)

Properly preselect absorbance reader form type based on the module state
at the creation of that form. The bug here arose from using the initial
robot state to determine module state rather than the current robot
state.

Closes RQA-3943

protocol-designer/src/step-forms/utils/createPresavedStepForm.ts

@@ -305,10 +305,10 @@ const _patchAbsorbanceReaderModuleId = (args: {
     )?.length ?? 1
   const hasAbsorbanceReaderModuleId = stepType === 'absorbanceReader'
 
-  const { modules } = initialDeckSetup
   const robotState: RobotState | null =
     last(robotStateTimeline.timeline)?.robotState ?? null
 
+  const modules = robotState?.modules ?? {}
   const labware = robotState?.labware ?? {}
 
   // pre-select form type if module is set