WebSockets Next: add test that UpgradeRejectedException is thrown #1824

Job	Run time
CI Sanity Check	32s
Initial JDK 17 Build	13m 53s
Attach pull request number	0s
Calculate Test Jobs	10s
JVM Tests - JDK 17	9m 37s
JVM Tests - JDK 21	8m 11s
Maven Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK 17 Windows	10m 1s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
Quickstarts Compilation - JDK 17	7m 22s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - ${{ matrix.category }}	0s
Native Tests - ${{ matrix.category }}	0s
Upload build stats to collector	0s
Build report	35s
	50m 21s

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