fix(step-generation): fix blowout location from multi-dispense disposal

[jerader]

closes RESC-356

Overview

When the blowout Z tip position field for multi dispense diposal was introduced to PD in the 8.1.0 release, we never tested that it actually worked correctly I guess. The bug outlined in the ticket shows that the customer set their blowout tip position to -20mm from the top of the well in multi-dispense diposal but when running their protocol, the blowout still occurred at the top of the well.

The fix was to modify the logic in which the blowoutOffsetFromTopMm was set in moveLiquidFormToArgs. With the blowout Z position field introduced to the multi-dispense disposal section, blowoutLocation was always being null because it required the user to select the blowout checkbox outside of the disposal section. This PR fixes that by also searching for if the disposal fields and blowout location are filled out.

Test Plan and Hands on Testing

Upload the attached protocol and search for the blowout commands with a position of -20 for the z value. See that it doesn't exist. Then upload it to PD and then export and look at the protocol again, the blowout commands with a position -20 for the z value should exist now.

qPCR Plating_v1_with Multi dispense_optimization.json

Changelog

Review requests

Risk assessment

low

[ncdiehl11]

lgtm