fix: initialize mainMenuBar, navigationBar, statusBar to true by default (closes #133)

JsonEditorOptions declared these as boolean but never initialized them,
so they were undefined and newer versions of the underlying jsoneditor
library stopped treating undefined as the documented true default.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: mariohmol

projects/ang-jsoneditor/src/lib/jsoneditor.spec.ts

@@ -1,6 +1,7 @@
 import { waitForAsync, ComponentFixture, TestBed } from '@angular/core/testing';
 
 import { JsonEditor } from './jsoneditor';
+import { JsonEditorOptions } from './jsoneditoroptions';
 
 describe('JsoneditorComponent', () => {
   let component: JsonEditor;
@@ -22,4 +23,21 @@ describe('JsoneditorComponent', () => {
   it('should be created', () => {
     expect(component).toBeTruthy();
   });
+
+  describe('JsonEditorOptions defaults', () => {
+    it('should default mainMenuBar to true', () => {
+      const options = new JsonEditorOptions();
+      expect(options.mainMenuBar).toBe(true);
+    });
+
+    it('should default navigationBar to true', () => {
+      const options = new JsonEditorOptions();
+      expect(options.navigationBar).toBe(true);
+    });
+
+    it('should default statusBar to true', () => {
+      const options = new JsonEditorOptions();
+      expect(options.statusBar).toBe(true);
+    });
+  });
 });

projects/ang-jsoneditor/src/lib/jsoneditoroptions.ts

@@ -160,5 +160,8 @@ export class JsonEditorOptions {
     this.mode = 'tree';
     this.search = true;
     this.indentation = 2;
+    this.mainMenuBar = true;
+    this.navigationBar = true;
+    this.statusBar = true;
   }
 }