fix: DIA-1982: update agreement when converting preds to annots

[pakelley]

---

This makes sure that annotations created from predictions get their annotation stats generated, resulting in proper agreement scores being calculated.

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[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 77.26%. Comparing base (2960b24) to head (2d2db6f).
Report is 9 commits behind head on develop.

Files with missing lines	Patch %	Lines
...data_manager/actions/predictions_to_annotations.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #7163      +/-   ##
===========================================
+ Coverage    77.20%   77.26%   +0.06%     
===========================================
  Files          187      187              
  Lines        14478    14483       +5     
===========================================
+ Hits         11178    11191      +13     
+ Misses        3300     3292       -8     

Flag	Coverage Δ
pytests	77.26% <80.00%> (+0.06%)	⬆️

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