[EEF][Sirius] The class org.eclipse.papyrus.sirius.properties.uml.Activator is loaded twice

Trying to fix the issue #17 (closed), I noticed the class org.eclipse.papyrus.sirius.properties.uml.Activator is instanciated twice. We call 2 twices its constructor and only one time the start() method.

It could be a source of bug and we should investigate this.

To reproduce:

Eclipse 2024-09 Committers with a fresh Papyrus-Desktop installation (from the nightly build)

In The workspace, I just have these plugins:

• org.eclipse.papyrus.sirius.properties.uml
• org.eclipse.papyrus.sirius.properties.uml.architecture
• org.eclipse.papyrus.sirius.uml
• org.eclipse.papyrus.sirius.uml.diagram.architecture
• org.eclipse.papyrus.sirius.uml.diagram.clazz
• org.eclipse.papyrus.sirius.uml.diagram.common