Update Catch2 and simplify concurrent test assertions

[Nicolas Pedernera (Nicolas-Pedernera)]

Summary

• Update Catch2 to v3.9.0.
• Enable Catch2 experimental thread-safe assertions.
• Remove the failure_count workaround from the sock_addr concurrent tests.
• Use CHECK for assertions performed by the worker threads.

Context

Catch2 now provides an opt-in configuration for thread-safe assertions. This allows the concurrent sock_addr tests to be simplified and removes the workaround introduced in #4155.

This addresses the cleanup requested in #4553.

Validation

• git diff --check passes.
• Catch2 v3.9.0 was configured successfully with CATCH_CONFIG_EXPERIMENTAL_THREAD_SAFE_ASSERTIONS=ON.
• Full Windows test execution should be validated by CI.

[github-actions]

This pull request isn't linked to any GitHub issue. Please reference an issue with a keyword such as Fixes #123, Closes #456, etc., so the work can be tracked.

[Nicolas Pedernera (Nicolas-Pedernera)]

@microsoft-github-policy-service agree

[Nicolas Pedernera (Nicolas-Pedernera)]

@microsoft-github-policy-service agree El mar, 8 sept 2026 a las 3:10, microsoft-github-policy-service[bot] (< ***@***.***>) escribió:

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[por1 (oga35767-eng)]

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