Fix CI errored tasks for front (#6806)

In this PR:
- revert de-optimization of icons bundle for storybook. This was forcing
the browser to load ~3k files while running stories
- adding lazy loading on Settings route to improve developer experience
(some files will be loaded later)
- fix FE tests: unit, modules stories, pages stories

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/pages/settings/serverless-functions/SettingsServerlessFunctionsNew.tsx

@@ -108,3 +108,5 @@ export const SettingsServerlessFunctionsNew = () => {
     </SubMenuTopBarContainer>
   );
 };
+
+export default SettingsServerlessFunctionsNew;