Try to stabilize sealed class completion tests #11679

Job	Run time
Build Clusters on JDK 17	9m 40s
NetBeans on nb-javac	0s
Build Clusters on JDK 21	8m 14s
Build Clusters on JDK 24-ea	7m 51s
Build ${{ matrix.config }} from src.zip on JDK ${{ matrix.java }}	0s
Build-System / Misc Tests on Linux/JDK 17	13m 46s
Build-Tools on Linux/JDK ${{ matrix.java }}	0s
IDE Modules on Linux/JDK 17	18m 50s
CV on ubuntu-latest/JDK 17	8m 43s
Java Debugger tests on Linux/JDK 17	5m 35s
CV on macos-latest/JDK 17	16m 41s
Java Debugger tests on Linux/JDK 21	5m 17s
Java Modules on Linux/JDK 17	40m 46s
CV on windows-latest/JDK 17	12m 44s
Java Hints batch1 on Linux/JDK 17	19m 21s
Java Debugger tests on Linux/JDK 24-ea	10m 34s
CV on ubuntu-latest/JDK 23	9m 21s
Java Hints batch2 on Linux/JDK 17	14m 21s
Check Paperwork on Linux/JDK 17	13m 5s
Java Hints batch1 on Linux/JDK 23	21m 39s
Platform Modules batch2 on Linux/JDK ${{ matrix.java }}	0s
Java Hints batch2 on Linux/JDK 23	14m 43s
Platform Modules batch1 on Linux/JDK ${{ matrix.java }} (some on 8)	0s
Profiler on Linux/JDK 17	1m 50s
Web Modules on Linux/JDK ${{ matrix.java }}	0s
Groovy on Linux/JDK ${{ matrix.java }}	0s
JavaFX on Linux/JDK ${{ matrix.java }}	0s
Rust on Linux/JDK ${{ matrix.java }}	0s
Enterprise on Linux/JDK ${{ matrix.java }}	0s
DB Tests with MySQL on Linux/JDK ${{ matrix.java }}	0s
PHP on ${{ matrix.os }}/JDK ${{ matrix.java }}	0s
Versioning Modules on Linux/JDK ${{ matrix.java }}	0s
LSP tests on Linux/JDK ${{ matrix.java }}	0s
VSCode Extension Tests on JDK ${{ matrix.java }}	0s
GraalVM ${{ matrix.graal }} Tests	0s
Cleanup Workflow Artifacts	2s
	4h 13m 3s

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