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

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

@@ -12,7 +12,7 @@ class DemoDashboardView extends DeesElement {
   @state()
   accessor activated: boolean = false;
 
-  private ctx: IViewActivationContext;
+  private ctx!: IViewActivationContext;
 
   private statsTiles: IStatsTile[] = [
     {
@@ -267,7 +267,7 @@ class DemoSettingsView extends DeesElement {
   @state()
   accessor hasChanges: boolean = false;
 
-  private appui: DeesAppui;
+  private appui!: DeesAppui;
 
   onActivate(context: IViewActivationContext) {
     this.appui = context.appui as any;

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);

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

@@ -173,7 +173,7 @@ export class ViewRegistry {
     }
 
     // Check for cached instance
-    let element = shouldCache ? this.instances.get(viewId) : undefined;
+    let element: HTMLElement | null | undefined = shouldCache ? this.instances.get(viewId) : undefined;
 
     if (element) {
       // Reuse cached instance - just show it