fix(logs): Expect log_item as rate limit category

[sentrivana]

The data category for rate limiting logs is log_item, not log.

Closes #4797

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.58%. Comparing base (5747863) to head (73b3fe7).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4798      +/-   ##
==========================================
+ Coverage   84.51%   84.58%   +0.06%     
==========================================
  Files         158      158              
  Lines       16513    16513              
  Branches     2866     2866              
==========================================
+ Hits        13956    13967      +11     
+ Misses       1709     1702       -7     
+ Partials      848      844       -4     

Files with missing lines	Coverage Δ
sentry_sdk/envelope.py	89.28% <100.00%> (+6.12%)	⬆️

... and 1 file with indirect coverage changes

[antonpirker]

nice!