🤖 Reduce Query Chunk Size in update_user_reports.py

[seer-by-sentry]

👋 Hi there! This PR was automatically generated 🤖

Triggered by tillman.elser@sentry.io

Fixes SENTRY-2Z31

To address the 'QuerySizeExceeded' error, the chunk size for processing event IDs in the 'update_user_reports.py' script needs to be reduced. This will prevent the query from exceeding the database's maximum allowed size by processing fewer event IDs in each chunk.

The steps that were performed:

1. Reduce MAX_EVENTS value

📣 Instructions for the reviewer which is you, yes you:

• If these changes were incorrect, please close this PR and comment explaining why.
• If these changes were incomplete, please continue working on this PR then merge it.
• If you are feeling confident in my changes, please merge this PR.

This will greatly help us improve the autofix system. Thank you! 🙏

If there are any questions, please reach out to the AI/ML Team on #proj-autofix

🤓 Stats for the nerds:

Prompt tokens: 51166
Completion tokens: 533
Total tokens: 51699

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.32%. Comparing base (7acf3a1) to head (f6ef404).
Report is 937 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #67259      +/-   ##
==========================================
- Coverage   84.33%   84.32%   -0.01%     
==========================================
  Files        5307     5307              
  Lines      237152   237152              
  Branches    41015    41015              
==========================================
- Hits       199992   199986       -6     
- Misses      36942    36948       +6     
  Partials      218      218              

Files	Coverage Δ
src/sentry/tasks/update_user_reports.py	100.00% <100.00%> (ø)

... and 6 files with indirect coverage changes

[getsantry]

This pull request has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you add the label WIP, I will leave it alone unless WIP is removed ... forever!

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"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀