fix(ts_web): resolve TypeScript nullability and event typing issues across web components

ts_web/elements/00group-appui/dees-appui/dees-appui.ts

@@ -1037,7 +1037,7 @@ export class DeesAppui extends DeesElement {
     if (!config.mainMenu?.sections) return [];
 
     return config.mainMenu.sections.map((section) => ({
-      name: section.name,
+      name: section.name || '',
       items: section.views
         .map((viewId) => {
           const view = this.viewRegistry.get(viewId);