[VIRTS-4674] Resolve Empty PDF Generation Issues

[bleepbop]

Description

When running an operation that generates long facts, users were encountering an error when attempting to export the operation to a PDF. The issue was due to an extremely long fact value that caused the table row to span multiple pages, which caused in error in the reportlab.platypus library.

As row heights need to be dynamically generated, I reduced the TABLE_CHAR_LIMIT (the maximum length of a fact value) to something that would restrict the row to one page at the most.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Prior to this update, the bug could be reproduced by the following steps:
1). Start agent and operation. When creating the operation. use the 'Discovery' adversary.
2). When the operation finished, go to Debrief, select the operation you just ran, and click Download PDF Report.
3). Ensure that the facts table is selected, and click download. The resulting PDF would be 0 bytes due to the error.

Now, the fact table will load correctly, and the PDF can be downloaded successfully.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

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