Do not set the MainWindow's icon images on macOS. #1

Job	Run time
Build Clusters on JDK 17	10m 5s
Build Clusters on JDK 21	8m 31s
NetBeans on nb-javac	0s
Build Clusters on JDK 22	8m 15s
Build-System Test on Linux/JDK 17	1m 7s
Check Paperwork on Linux/JDK 17	13m 17s
IDE Modules on Linux/JDK 17	23m 17s
CV on ubuntu-latest/JDK 17	7m 30s
CV on macos-latest/JDK 17	14m 44s
APISupport Modules on Linux/JDK 8	5m 24s
Build platform from src.zip on JDK 17	3m 17s
CV on windows-latest/JDK 17	9m 28s
Build release from src.zip on JDK 17	14m 18s
CV on ubuntu-latest/JDK 21	10m 38s
Build NBMs and Javadoc on JDK 17	20m 38s
Build-Tools on Linux/JDK 17	26m 0s
Enterprise on Linux/JDK 17 (some on 8)	15m 8s
Build-Tools on Linux/JDK 22	9m 10s
GraalVM 22.3.1 Tests	11m 52s
Groovy on Linux/JDK 8	9m 41s
Harness, NB and Ergonomics on Linux/JDK 17	9m 27s
Java Debugger tests on Linux/JDK 17	6m 17s
Java Debugger tests on Linux/JDK 22	5m 43s
JavaFX on Linux/JDK 17	1m 59s
Java Hints batch1 on Linux/JDK 17	17m 40s
Java Hints batch2 on Linux/JDK 17	23m 11s
Java Modules on Linux/JDK 17	41m 59s
LSP tests on Linux/JDK 17	4m 19s
DB Tests with MySQL on Linux/JDK 17	2m 31s
Platform Modules batch1 on Linux/JDK 17 (some on 8)	35m 14s
Platform Modules batch2 on Linux/JDK 17	38m 17s
PHP on windows-latest/JDK 17	54m 59s
PHP on ubuntu-latest/JDK 17	41m 55s
Profiler on Linux/JDK 11	1m 2s
Rust on Linux/JDK 17	1m 28s
Versioning Modules on Linux/JDK 17	10m 19s
Webcommon Modules on Linux/JDK 17	19m 2s
VSCode Extension Tests on JDK 17	4m 43s
Cleanup Workflow Artifacts	0s
	9h 2m 25s

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