Uninstalling the main product removes eclipse.exe

[Madjosz]

Same as Bug 569435.

I ran into this bug when I wanted to update to Eclipse 2023-12 from 2023-09. I got a dependency problem with "Eclipse for RCP and RAP Developers v4.29" vs "v4.30". So I thought "uninstall 4.29 first, then update, and then maybe reinstall". Turns out unstalling epp.package.rcp removes the eclipse.exe. Maybe this is a wanted behaviour as it is effectively unistalling Eclipse alltogether but still it leaves a whole bunch of leftovers then.

How to reproduce

1. Download Eclipse, e.g. eclipse-rcp-2023-12-R-win32-x86_64.zip, unzip it somewhere
2. Start Eclipse, go to Help -> About Eclipse
3. Open Installation Details
4. Select "Eclipse for RCP and RAP Developers 4.30.0.20231201-1200"
5. Press "Uninstall..."
6. Press "Finish"
7. Press "Restart Now"
8. eclipse.exe is deleted, nothing happens

Expected behaviour

One of

• Warn the user that this uninstall will effectively remove Eclipse
• Disallow uninstalling the main product
• Only remove associated plugins, not the executable.

System information

Eclipse IDE for RCP and RAP Developers (includes Incubating components)
Version: 2023-12 (4.30.0)
Build id: 20231201-2043

openjdk 17.0.8.1 2023-08-24
OpenJDK Runtime Environment Temurin-17.0.8.1+1 (build 17.0.8.1+1)
OpenJDK 64-Bit Server VM Temurin-17.0.8.1+1 (build 17.0.8.1+1, mixed mode, sharing)

Windows 10 Pro 22H2 build 19045.3693