raw_confidence_score property for predictions

[kliment-slice]

[sc-19036]
Added:

• raw_confidence_score property to predictions (rounded to 2 decimal points to match the UI)
• Validation checks
• Test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.43%. Comparing base (4fdb9a3) to head (6dcd5ae).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #87      +/-   ##
==========================================
+ Coverage   82.67%   83.43%   +0.76%     
==========================================
  Files          46       46              
  Lines        2557     2572      +15     
==========================================
+ Hits         2114     2146      +32     
+ Misses        443      426      -17     

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[awoimbee]

I have questions/remarks (plz answer before merging), but it works