After test finishes, maven-surefire-plugin hangs in LineConsumerThread

### Affected version

3.5.5

### Bug description

After test finishes, maven-surefire-plugin hangs in LineConsumerThread

surefire runs as part of a Jenkins build, the hanging process is

jenkins 2263469 2212482 0 10:33 ? 00:00:32 /appl/java/jdk-21.0.10-x86-64/bin/java -javaagent:/jenkins/jenkins/.../.repository/org/mockito/mockito-core/5.18.0/mockito-core-5.18.0.jar -Xshare:off -jar /jenkins/jenkins/.../target/surefire/surefirebooter-20260403102932249_415.jar /jenkins/jenkins/.../target/surefire 2026-04-03T09-48-59_733-jvmRun1 surefire-20260403102932249_413tmp surefire_36-20260403102932249_414tmp

Attached is the stack dump.

[2212482.jstack.txt](https://github.com/user-attachments/files/26459412/2212482.jstack.txt)

Start with the attached jstack dump and the LineConsumerThread mentioned in the report, then reproduce the hang in the Jenkins Maven build described. The work is done when the surefire process exits after tests finish without remaining blocked in LineConsumerThread.

Written by the indexing model from the issue text.