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/testing/mock-data/timeline-activities.ts

@@ -58,7 +58,7 @@ export const mockedTimelineActivities: Array<TimelineActivity> = [
     linkedObjectMetadataId: '1ad72a42-6ab4-4474-a62a-a57cae3c0298',
     linkedRecordCachedName: 'New Task',
     linkedRecordId: 'ce40eca0-8f4b-4bba-ba91-5cbd870c64d2',
-    name: 'task.created',
+    name: 'linked-task.created',
     createdAt: '2023-04-26T10:12:42.33625+00:00',
     workspaceMember: {
       __typename: 'WorkspaceMember',