fix(aiohttp): Handle invalid responses

[szokeasaurusrex]

If the request handler returns an invalid response (e.g. None), our SDK triggers an error because we try to access the invalid response's status attribute. Wrap this with a try block to handle the AttributeError and ensure the SDK does not break the app.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.54%. Comparing base (0ee7c50) to head (dc200ac).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3554      +/-   ##
==========================================
+ Coverage   84.49%   84.54%   +0.05%     
==========================================
  Files         133      133              
  Lines       13840    13844       +4     
  Branches     2927     2927              
==========================================
+ Hits        11694    11705      +11     
+ Misses       1422     1415       -7     
  Partials      724      724              

Files with missing lines	Coverage Δ
sentry_sdk/integrations/aiohttp.py	85.53% <100.00%> (+0.37%)	⬆️

... and 4 files with indirect coverage changes