fix(protocol-designer): get labware location from current step index

[jerader]

closes RQA-3774

Overview

Previous logic was grabbing the labware location from the latest move labware step for the whole protocol but didn't account for if you are opening up a previously made step earlier on in the protocol before the labware moved. So now, the logic takes that certain step id index into account

Test Plan and Hands on Testing

upload the attached protocol and look at step 10. see that the labware in the dropdown menu are not ending with "cutoutD3", should instead say "off-deck"

Zymo_Magbead_DNA_Cells-Flex_96_channel Truly fixed.json

Additionally, you can test moving a labware to multiple locations and checking that the slot number in the dropdown properly updates.

Changelog

• fix logic to grab location at certain step index
• align logic for move labware field and labware field in transfer steps

Risk assessment

low