fix(ta processing): filter by flag_id instead of join

[joseph-sentry]

the query with the join is the most expensive query in the db right now, this should improve it

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.98%. Comparing base (d493782) to head (70d06fe).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #928   +/-   ##
=======================================
  Coverage   97.98%   97.98%           
=======================================
  Files         446      446           
  Lines       35656    35656           
=======================================
  Hits        34936    34936           
  Misses        720      720           

Flag	Coverage Δ
integration	42.10% <100.00%> (ø)
unit	90.65% <0.00%> (ø)

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[codecov-notifications]

Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

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[github-actions]

✅ All tests successful. No failed tests were found.

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