Fact source score of 0 still being used in the operation

[onyxwasp]

Describe the bug
Caldera readthedocs mentions that assigning a fact source a score of 0 will prohibit that fact from being used in the operation. I created three total facts: two of them had a score of 1, and one of them had a score of 0. When I executed the operation, all three facts were used.

To Reproduce
Steps to reproduce the behavior:

1. Create a new fact source and assign a fact a score of 0.
2. Run the appropriate operation that calls that fact.

Expected behavior
Only the two facts with a score of 1 should have been used in the operation, but all three were used, including the fact with a value of 0.

Screenshots

Desktop (please complete the following information):

• OS: Ubuntu 24.04
• Browser: Firefox v135.0

Additional context
This was using Caldera v5.0.

[github-actions]

Looks like your first issue -- we aim to respond to issues as quickly as possible. In the meantime, check out our documentation here: http://caldera.readthedocs.io/

[uruwhy]

Good catch - it looks like we aren't filtering facts based on score when pulling from the operation source: https://github.com/mitre/caldera/blob/master/app/objects/c_operation.py#L193-L195

I have a fix for this here

[mkultraWasHere]

close with #3167