🤖 Handle None values in exception interface attribute extraction

[seer-by-sentry]

👋 Hi there! This PR was automatically generated 🤖

Triggered by Jenn Mueng

Fixes SENTRY-Y88

This change updates the event_attribute.py file to enhance the robustness of the attribute extraction from exception interfaces in events. Specifically, in the list comprehension that retrieves attributes ('type' or 'value') from each exception in the event's exception interface, a check is added to ensure that the exception object is not None before attempting to access its attributes. This prevents potential errors that could arise from trying to access attributes of a None object, thereby improving the error handling capabilities of the code.

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• If these changes were incorrect, please close this PR and comment explaining why.
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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:

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Completion tokens: 1459
Total tokens: 20323

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.85%. Comparing base (2bdf2a7) to head (a35e1f0).
Report is 1052 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #69676       +/-   ##
===========================================
- Coverage   91.24%   79.85%   -11.40%     
===========================================
  Files        2853     6468     +3615     
  Lines      177030   287627   +110597     
  Branches    31573    49577    +18004     
===========================================
+ Hits       161536   229684    +68148     
- Misses      15493    57551    +42058     
- Partials        1      392      +391     

Files	Coverage Δ
src/sentry/rules/conditions/event_attribute.py	85.14% <100.00%> (ø)

... and 3621 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 🥀