fix(similarity): cohort backfill pr adjustments

[JoshFerge]

follow ups from #73075

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.98%. Comparing base (21e7c12) to head (87df83f).

❗ Current head 87df83f differs from pull request most recent head 7c60f63

Please upload reports for the commit 7c60f63 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #73126      +/-   ##
==========================================
- Coverage   77.99%   77.98%   -0.02%     
==========================================
  Files        6625     6623       -2     
  Lines      295652   295563      -89     
  Branches    50927    50904      -23     
==========================================
- Hits       230598   230486     -112     
- Misses      58775    58801      +26     
+ Partials     6279     6276       -3     

Files	Coverage Δ
...ping/backfill_seer_grouping_records_for_project.py	83.09% <100.00%> (ø)
src/sentry/tasks/embeddings_grouping/utils.py	91.07% <100.00%> (ø)

... and 152 files with indirect coverage changes

[lobsterkatie]

LGTM! Thanks for following up on this!