Tolerate servlet 2.x wrappers used on servlet-3 classpath for isAsyncStarted calls

[amarziali]

What Does This Do

When servlet 2.x wrappers are used along with a servlet3 classpath the issue is that those wrappers are not implementing methods that are expected to be there by the servlet 3 spec.

One example is isAsyncStarted. In those cases we see issues like:

java.lang.AbstractMethodError
  at javax.servlet.ServletRequestWrapper.isAsyncStarted(ServletRequestWrapper.java:479)
  at javax.servlet.ServletRequestWrapper.isAsyncStarted(ServletRequestWrapper.java:479)
  at (redacted: 18 frames)

or even:

java.lang.AbstractMethodError
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:791)
  at (redacted: 14 frames)

This PR makes sure that access to this method tolerates this case

Motivation

Additional Notes

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Jira ticket: [PROJ-IDENT]

[datadog-official]

✨ Fix all issues with BitsAI

⚠️ Warnings

🚦 5 Pipeline jobs failed

DataDog/apm-reliability/dd-trace-java | java-startup-parallel-check-slo-breaches     

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No Markdown threshold comparison report generated by benchmark_analyzer due to missing scenarios for comparison.

DataDog/apm-reliability/dd-trace-java | java-startup-parallel-generate-slos     

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Artifact generation failed: directory 'artifacts' not found.

DataDog/apm-reliability/dd-trace-java | java-startup-parallel-upload-to-bp-api     

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File not found: '/go/src/github.com/DataDog/apm-reliability/dd-trace-java/artifacts/candidate-*.converted.json'.

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[amarziali]

/merge

[gh-worker-devflow-routing-ef8351]

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2026-06-03 14:33:32 UTC ℹ️ Start processing command /merge

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2026-06-03 14:33:38 UTC ℹ️ MergeQueue: pull request added to the queue

The expected merge time in master is approximately 1h (p90).

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2026-06-03 15:55:40 UTC ℹ️ MergeQueue: This merge request was merged