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/.storybook/main.ts

@@ -51,9 +51,6 @@ const config: StorybookConfig = {
 
     return mergeConfig(config, {
       // Add dependencies to pre-optimization
-      optimizeDeps: {
-        exclude: ['@tabler/icons-react'],
-      },
     });
   },
 };