fix(step-generation): set air gap dispense pushOut to 0 (#18810)

Ensure `pushOut` param for air gap `dispenseInPlace` commands is
explicitly 0.

Author: ncdiehl11

step-generation/src/commandCreators/compound/distribute.ts

@@ -789,6 +789,7 @@ export const distribute: CommandCreator<DistributeArgs> = (
                 volume: conditioningVolume,
                 flowRate: dispenseFlowRateUlSec,
                 correctionVolume: dispenseCorrectionVolumeForConditioningVolume,
+                pushOut: 0,
               }),
               ...delayAfterDispenseCommands,
             ]

step-generation/src/commandCreators/compound/transfer.ts

@@ -620,6 +620,7 @@ export const transfer: CommandCreator<TransferArgs> = (
                           correctionVolume: dispenseCorrectionVolumeForDispenseAirGap,
                         }
                       : {}),
+                    pushOut: 0,
                   }),
                   ...delayAfterDispenseCommands,
                 ]

step-generation/src/fixtures/commandFixtures.ts

@@ -330,6 +330,7 @@ export const aspirateHelperLiquidClass = (submergeParams: {
               pipetteId,
               volume: dispenseAirGap,
               flowRate: dispenseFlowRate,
+              pushOut: 0,
             },
             meta: AIR_GAP_META,
           },