fix: update test cases for Menubar and Calendar components

- Update Menubar test cases to match component changes (logo instead of text)
- Add required currentView prop to all Menubar test cases
- Fix Calendar test cases by adding calendarRef wrapper component
- Convert babel.config.ts to babel.config.js for Node.js 24 compatibility
- All 146 tests now pass successfully

babel.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  presets: [
+    ["@babel/preset-env", { targets: { node: "current" } }],
+    ["@babel/preset-react", { runtime: "automatic", importSource: "preact" }],
+  ],
+};