WebSockets Next: attempt to fix/diagnose flaky tests [do not merge yet!] #38516

Job	Run time
CI Sanity Check	31s
CI Sanity Check	31s
Initial JDK 17 Build	17m 4s
Initial JDK 17 Build	17m 4s
Attach pull request number	4s
Attach pull request number	4s
Calculate Test Jobs	8s
Calculate Test Jobs	8s
JVM Tests - JDK 17	4m 4s
JVM Tests - JDK 17	4m 4s
JVM Tests - JDK 21	2m 35s
JVM Tests - JDK 21	4m 42s
Maven Tests - JDK ${{ matrix.java.name }}	0s
Maven Tests - JDK ${{ matrix.java.name }}	0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK 17 Windows	5m 12s
JVM Tests - JDK 17 Windows	5m 12s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
MicroProfile TCKs Tests	0s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - ${{ matrix.category }}	0s
Native Tests - Virtual Thread - ${{ matrix.category }}	0s
Quickstarts Compilation - JDK 17	6m 1s
Quickstarts Compilation - JDK 17	6m 1s
Native Tests - ${{ matrix.category }}	0s
Native Tests - ${{ matrix.category }}	0s
Build report	17s
Build report	17s
	1h 13m 59s

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