(via vaibhav-jain-exp): Remove always-empty $unset object from userProperties in Exposure.toAmpl

[macroscopeapp]

Macroscope: Fix It For Me

• This PR originated from this comment in feat: support exposure tracking #31.
• Since auto-merge is on, Macroscope will merge this PR after waiting for checks to pass.
• If you'd rather not wait, you can always merge this yourself but no further action from you is currently needed.
• You can also @mention Macroscope in this PR to request further changes.

Activity

Currently: Merged by vaibhav-jain-exp

Previously

• Pushed 47dbb09
• Merged by vaibhav-jain-exp
• Working on next commit...
• Waiting on checks
• Pushed ccb3204

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Remove the always-empty $unset field from Exposure.toAmplitudeEvents userProperties to stop sending empty unsets

Update Exposure.toAmplitudeEvents in ExposureTracker.kt to build only the $set object in userProperties and drop creation/insertion of an empty $unset.

📍Where to Start

Start with the Exposure.toAmplitudeEvents method in ExposureTracker.kt.

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Macroscope summarized ccb3204.