chore - add missing unknown priority

[juicetin]

Description

• add unknown priority to have the option for customers to opt into all findings regardless of priority
• also needed to fix all the breaking integration tests when introducing priority threshold filtering

Test Plan

Please include steps to test the change. Include screenshots if applicable.

Checklist

• I have performed a self-review of my own code
• I have checked for redundant or commented out code
• I have made corresponding changes to the documentation
• I have added any appropriate tests