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/not-found/__stories__/NotFound.stories.tsx

@@ -1,23 +1,17 @@
 import { Meta, StoryObj } from '@storybook/react';
 import { within } from '@storybook/test';
 
-import { ComponentWithRouterDecorator } from '~/testing/decorators/ComponentWithRouterDecorator';
-import { HelmetProviderDecorator } from '~/testing/decorators/HelmetProviderDecorator';
-import { PageDecoratorArgs } from '~/testing/decorators/PageDecorator';
-import { RelationPickerDecorator } from '~/testing/decorators/RelationPickerDecorator';
-import { SnackBarDecorator } from '~/testing/decorators/SnackBarDecorator';
+import {
+  PageDecorator,
+  PageDecoratorArgs,
+} from '~/testing/decorators/PageDecorator';
 import { graphqlMocks } from '~/testing/graphqlMocks';
 
 import { NotFound } from '../NotFound';
 const meta: Meta<PageDecoratorArgs> = {
   title: 'Pages/NotFound/Default',
   component: NotFound,
-  decorators: [
-    HelmetProviderDecorator,
-    ComponentWithRouterDecorator,
-    SnackBarDecorator,
-    RelationPickerDecorator,
-  ],
+  decorators: [PageDecorator],
   args: {
     routePath: '/toto-not-found',
   },