[BUG] - Flaky test `CommonExceptionDataTest#should_include_code_in_json_when_code_is_not_null`

[pem70]

Steps to Reproduce

The test should_include_code_in_json_when_code_is_not_null in CommonExceptionDataTest from module swagger/swagger-invocation/invocation-core is flaky. It compares the exact JSON string output, which can vary in key order when serialized from a Map or object without guaranteed ordering. Different JVMs or JSON libraries may produce a map with different key order, causing intermittent failures even though the data is semantically identical.

This test was flagged via the NonDex tool, which detects potentially unreliable tests due to underlying Java API assumptions. To see the Nondex output for this test, run:

mvn -pl swagger/swagger-invocation/invocation-core edu.illinois:nondex-maven-plugin:2.1.7:nondex -Dtest=org.apache.servicecomb.swagger.invocation.exception.CommonExceptionDataTest#should_include_code_in_json_when_code_is_not_null

Expected Behavior

The test should pass for map with semantically identical data but different key order.

Servicecomb Version

3.3.0

Additional Context

I have a potential fix in a PR, and I'll add that to the discussion.

[pem70]

PR: #4992