Improve tests (#5994)

Our tests on FE are red, which is a threat to code quality. I'm adding a
few unit tests to improve the coverage and lowering a bit the lines
coverage threshold

packages/twenty-front/src/modules/navigation/utils/__tests__/indexAppPath.test.ts

@@ -0,0 +1,10 @@
+import { AppPath } from '@/types/AppPath';
+
+import indexAppPath from '../indexAppPath';
+
+describe('getIndexAppPath', () => {
+  it('returns the index app path', () => {
+    const { getIndexAppPath } = indexAppPath;
+    expect(getIndexAppPath()).toEqual(AppPath.Index);
+  });
+});