Fix DS editor showing dirty on open without actual changes

   The DSComponent constructor called setNamespace() and
   setNamespacePrefix() which fired property change events, causing
   the model to be marked dirty during initial loading. Use super
   calls to set namespace defaults without triggering change events.

   Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: laeubi

ds/org.eclipse.pde.ds.core/src/org/eclipse/pde/internal/ds/core/text/DSComponent.java

@@ -51,8 +51,10 @@ public class DSComponent extends DSObject implements IDSComponent {
 	public DSComponent(DSModel model) {
 		super(model, ELEMENT_COMPONENT);
 		setAttributeName(IDSConstants.ELEMENT_COMPONENT);
-		setNamespace(IDSConstants.NAMESPACE); // hard code namespace to be 1.1
-		setNamespacePrefix("scr"); //$NON-NLS-1$
+		// Use super calls to set namespace defaults without firing property
+		// change events that would incorrectly mark the model as dirty
+		super.setNamespace(IDSConstants.NAMESPACE);
+		super.setNamespacePrefix("scr"); //$NON-NLS-1$
 		setInTheModel(true);
 	}