[CI] NettyAllocatorTests testTrashingCompositeByteBuf failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #7672 / ubuntu-2404-aarch64_checkpart1_platform-support-arm
• elasticsearch-periodic-platform-support #7672 / ubuntu-2004-aarch64_checkpart1_platform-support-arm
• elasticsearch-periodic-platform-support #7672 / ubuntu-2204_platform-support-unix
• elasticsearch-periodic #7650 / concurrent-search-tests
• elasticsearch-periodic-platform-support #7672 / ubuntu-2004_platform-support-unix
• elasticsearch-periodic-platform-support #7672 / debian-12_platform-support-unix
• elasticsearch-periodic-platform-support #7672 / ubuntu-2404_platform-support-unix
• elasticsearch-periodic-platform-support #7672 / almalinux-8_platform-support-unix
• elasticsearch-periodic-platform-support #7672 / rocky-9_platform-support-unix
• elasticsearch-periodic-platform-support #7672 / opensuse-leap-15_platform-support-unix

Reproduction Line:

./gradlew ":modules:transport-netty4:test" --tests "org.elasticsearch.transport.netty4.NettyAllocatorTests.testTrashingCompositeByteBuf" -Dtests.seed=5F2096B0C9B4D83D -Dtests.locale=ne-IN -Dtests.timezone=Australia/Melbourne -Druntime.java=24

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: 
Expected: an empty collection
     but: <[LEAK: ByteBuf.release() was not called before it's garbage-collected. See https://netty.io/wiki/reference-counted-objects.html for more information.
Recent access records: 
#1:
	Hint: Caller of readInbound() will handle the message from this point
	io.netty.buffer.AdvancedLeakAwareCompositeByteBuf.touch(AdvancedLeakAwareCompositeByteBuf.java:36)
	io.netty.handler.codec.http.HttpObjectAggregator$AggregatedFullHttpMessage.touch(HttpObjectAggregator.java:366)
	io.netty.handler.codec.http.HttpObjectAggregator$AggregatedFullHttpRequest.touch(HttpObjectAggregator.java:445)
	io.netty.handler.codec.http.HttpObjectAggregator$AggregatedFullHttpRequest.touch(HttpObjectAggregator.java:396)
	io.netty.channel.embedded.EmbeddedChannel.readInbound(EmbeddedChannel.java:314)
	org.elasticsearch.http.netty4.Netty4HttpHeaderValidatorTests.testWithFlowControlAndAggregator(Netty4HttpHeaderValidatorTests.java:160)
	java.base/jdk.internal.ref
[truncated]

Issue Reasons:

• [main] 3 consecutive failures in step ubuntu-2404-aarch64_checkpart1_platform-support-arm
• [main] 2 consecutive failures in step ubuntu-2004-aarch64_checkpart1_platform-support-arm
• [main] 2 consecutive failures in step concurrent-search-tests
• [main] 2 consecutive failures in step ubuntu-2004_platform-support-unix
• [main] 3 consecutive failures in step ubuntu-2404_platform-support-unix
• [main] 5 consecutive failures in step rocky-9_platform-support-unix
• [main] 2 consecutive failures in step rhel-9_platform-support-unix
• [main] 5 consecutive failures in step amazonlinux-2023_platform-support-aws
• [main] 7 consecutive failures in step oraclelinux-9_platform-support-unix
• [main] 4 consecutive failures in step single-processor-node-tests
• [main] 97 failures in test testTrashingCompositeByteBuf (15.3% fail rate in 636 executions)
• [main] 3 failures in step almalinux-8-aarch64_checkpart1_platform-support-arm (33.3% fail rate in 9 executions)
• [main] 7 failures in step ubuntu-2404-aarch64_checkpart1_platform-support-arm (77.8% fail rate in 9 executions)
• [main] 7 failures in step ubuntu-2004-aarch64_checkpart1_platform-support-arm (77.8% fail rate in 9 executions)
• [main] 4 failures in step ubuntu-2204_platform-support-unix (44.4% fail rate in 9 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]

New test is leaking.

org.elasticsearch.http.netty4.Netty4HttpHeaderValidatorTests.testWithFlowControlAndAggregator

1> Created at: |  
-- | --
  | 1> 	io.netty.buffer.AbstractByteBufAllocator.compositeHeapBuffer(AbstractByteBufAllocator.java:214) |  
  | 1> 	io.netty.buffer.AbstractByteBufAllocator.compositeBuffer(AbstractByteBufAllocator.java:204) |  
  | 1> 	io.netty.handler.codec.MessageAggregator.decode(MessageAggregator.java:269) |  
  | 1> 	io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:91) |  
  | 1> 	org.elasticsearch.http.netty4.Netty4HttpAggregator.channelRead(Netty4HttpAggregator.java:51) |  
  | 1> 	io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) |  
  | 1> 	io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) |  
  | 1> 	io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) |  
  | 1> 	org.elasticsearch.http.netty4.Netty4HttpHeaderValidator.lambda$handleValidationResult$1(Netty4HttpHeaderValidator.java:111) |  
  | 1> 	io.netty.channel.embedded.EmbeddedEventLoop.runTasks(EmbeddedEventLoop.java:74) |  
  | 1> 	io.netty.channel.embedded.EmbeddedChannel.runPendingTasks(EmbeddedChannel.java:814) |  
  | 1> 	org.elasticsearch.http.netty4.Netty4HttpHeaderValidatorTests.testWithFlowControlAndAggregator(Netty4HttpHeaderValidatorTests.java:158)