Add workspace favorites behind feature flag (#6904)

- make member nullable on favorites
- add potential relation with view entity
- add a new type of favorite list in front : workspace favorite
- build a new component for retrieving workspace favorite to display +
refacto the existing one

Bonus:
- removing activities seed since this is deprecated

packages/twenty-front/src/modules/ui/navigation/navigation-drawer/components/__stories__/NavigationDrawer.stories.tsx

@@ -16,13 +16,13 @@ import {
   IconUsers,
 } from 'twenty-ui';
 
-import { Favorites } from '@/favorites/components/Favorites';
 import { getSettingsPagePath } from '@/settings/utils/getSettingsPagePath';
 import { SettingsPath } from '@/types/SettingsPath';
 import { GithubVersionLink } from '@/ui/navigation/link/components/GithubVersionLink';
 import { ComponentWithRouterDecorator } from '~/testing/decorators/ComponentWithRouterDecorator';
 import { SnackBarDecorator } from '~/testing/decorators/SnackBarDecorator';
 
+import { CurrentWorkspaceMemberFavorites } from '@/favorites/components/CurrentWorkspaceMemberFavorites';
 import { NavigationDrawerSubItem } from '@/ui/navigation/navigation-drawer/components/NavigationDrawerSubItem';
 import { NavigationDrawer } from '../NavigationDrawer';
 import { NavigationDrawerItem } from '../NavigationDrawerItem';
@@ -66,7 +66,7 @@ export const Default: Story = {
           />
         </NavigationDrawerSection>
 
-        <Favorites />
+        <CurrentWorkspaceMemberFavorites />
 
         <NavigationDrawerSection>
           <NavigationDrawerSectionTitle label="Workspace" />