GLSP-1369 Fix wrong edge type hint (#93)

- Ensure that the type hint for weighted edges if created with the correct `elementTypeId`

Part of eclipse-glsp/glsp#1369

Author: tortmayr

examples/workflow-server/src/common/workflow-diagram-configuration.ts

@@ -63,7 +63,7 @@ export class WorkflowDiagramConfiguration implements DiagramConfiguration {
         return [
             createDefaultEdgeTypeHint(DefaultTypes.EDGE),
             createDefaultEdgeTypeHint({
-                elementTypeId: DefaultTypes.EDGE,
+                elementTypeId: types.WEIGHTED_EDGE,
                 dynamic: true,
                 sourceElementTypeIds: [types.ACTIVITY_NODE],
                 targetElementTypeIds: [types.TASK, types.ACTIVITY_NODE]