Set spans as errored in AWS integration when AWS requests fail

[p-datadog]

Update of #936 for current master

What does this PR do?

Original description from #936:

I noticed that when calls to AWS error out (5xx), the spans show up as green and are not marked as being an error. The http.status_code tag was however being set correctly to the 5xx status code.

In this PR, the aws/instrumentation.rb code sets the error on the span, if the status_code is in the Datadog::Ext::HTTP::ERROR_RANGE.

Motivation:

Change log entry
Yes: mark AWS integration spans as errored when AWS requests fail

Additional Notes:
At the point where AWS integration runs we do not have any textual description of the error to add to the span. We add the HTTP code (e.g. 500) and the host to which the request is made also makes it into the span.

How to test the change?
Tests are added

[github-actions]

Thank you for updating Change log entry section 👏

^{Visited at: 2025-05-28 15:02:45 UTC}

[datadog-datadog-prod-us1]

Datadog Report

Branch report: aws-set-error
Commit report: b23e21b
Test service: dd-trace-rb

✅ 0 Failed, 21700 Passed, 1299 Skipped, 4m 9.68s Total Time

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-05-27 23:57:26

Comparing candidate commit b23e21b in PR branch aws-set-error with baseline commit ff8ae5b in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 39 metrics, 6 unstable metrics.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.63%. Comparing base (ff8ae5b) to head (b23e21b).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4672      +/-   ##
==========================================
- Coverage   97.64%   97.63%   -0.01%     
==========================================
  Files        1470     1470              
  Lines       87685    87702      +17     
  Branches     4544     4546       +2     
==========================================
+ Hits        85624    85632       +8     
- Misses       2061     2070       +9     

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