[362] Fix the bug in the refresh of the layer tooltip

When the VSM is changed, the tooltip of all layers is updated. But the
tooltip list was never cleared between two menuShow. So the first n
tooltip text were always the same and the updated tooltips were in an
unreachable position (at the end) in the list.

Bug: #359
Signed-off-by: Séraphin Costa <[email protected]>

plugins/org.eclipse.sirius.diagram.ui/src-diag/org/eclipse/sirius/diagram/ui/tools/internal/editor/tabbar/AbstractMenuContributionItem.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2010, 2018 THALES GLOBAL SERVICES and others.
+ * Copyright (c) 2010, 2024 THALES GLOBAL SERVICES and others.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
@@ -168,6 +168,7 @@ public void menuAboutToHide(IMenuManager manager) {
 
             @Override
             public void menuAboutToShow(IMenuManager manager) {
+                tooltips.clear();
                 menuShow(manager);
             }
         });