[CI] Netty4IncrementalRequestHandlingIT testOversizedChunkedEncoding failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #5907 / almalinux-8_platform-support-unix
• elasticsearch-periodic-platform-support #5902 / rocky-8_platform-support-unix
• elasticsearch-periodic-platform-support #5892 / rhel-8_platform-support-unix
• elasticsearch-periodic-platform-support #5887 / rhel-8_platform-support-unix
• elasticsearch-periodic-platform-support #5887 / oraclelinux-8_platform-support-unix

Reproduction Line:

./gradlew ":modules:transport-netty4:pooledInternalClusterTest" --tests "org.elasticsearch.http.netty4.Netty4IncrementalRequestHandlingIT.testOversizedChunkedEncoding" -Dtests.seed=3D3A92C02940E0D3 -Dtests.locale=es -Dtests.timezone=Europe/Ulyanovsk -Druntime.java=23

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: cannot request next chunk on closing stream

Issue Reasons:

• [main] 5 failures in test testOversizedChunkedEncoding (2.4% fail rate in 208 executions)
• [main] 2 failures in step rhel-8_platform-support-unix (50.0% fail rate in 4 executions)
• [main] 4 failures in pipeline elasticsearch-periodic-platform-support (80.0% fail rate in 5 executions)

Note:
This issue was created using new test triage automation. Please report issues or feedback to es-delivery.

[elasticsearchmachine]

Pinging @elastic/es-distributed-coordination (Team:Distributed Coordination)

[mhl-b]

Should be fixed by #120417