Exporting incomplete calls corrupts the HAR file

[Cristiancbot]

Description:
Exporting calls which are marked as incomplete leads to a corrupted HAR file.
The incomplete calls need to be removed first after which the HAR export can be used in other tools as well (ex:Proxyman)

Steps To Reproduce:

1. Log a session and navigate until you notice an incomplete call in the log
2. Pause the logging and export the incomplete call as HAR
3. Attempt to import the incomplete call in any other tool

Observed:
The HAR file will be viewed as corrupted and the import will not start.

Expected behavior:
Incomplete calls should be exported in a way in which they can be imported into other tools
OR
Ignore incomplete calls when exporting as HAR - maybe with a warning.

Version:
5.20.0