Fix!: Remove JSON parsing error and update detailed report formatting

[pk-zipstack]

What

• Removed json.loads in extract_error_message to avoid TypeError when processing API responses already in dictionary format.
• Removed the error message column from the detailed report output.
• Added a note in the detailed report output to guide users to use the --export_csv argument for accessing error messages.

Why

• The use of json.loads on a dictionary object caused a TypeError. This change ensures compatibility with API responses that are already deserialized into dictionaries.
• The error message column cluttered the detailed report output and was not necessary for most use cases. By adding a note, users are now guided to generate a CSV report if they need detailed error information.

How

• Replaced json.loads(result) with direct usage of the result dictionary in extract_error_message.
• Updated print_report to exclude the error message column and display a note about the --export_csv option.

Can this PR break any existing features. If yes, please list possible items. If no, please explain why.

• No. These changes improve usability without altering existing functionality.