Navbar with AI chats (#18161)

## Summary
Add Home/Chat tabs and a dedicated threads list in the navigation
drawer.

## Changes
- **Navbar tabs:** Tabs in the drawer to switch between Home and Chat
(with “New chat” button). Shown on desktop when expanded and on mobile
below the workspace selector.
- **Navbar threads list:** New `NavigationDrawerAIChatThreadsList` for
the Chat tab with date groups (Today / Yesterday / Older), thread rows
as `NavigationDrawerItem` (IconComment, title, timestamp). Shared
`useAIChatThreadClick` hook used by navbar and command menu; navbar
passes `resetNavigationStack: true`.
- **NavigationDrawerItem:** New `alwaysShowRightOptions` prop so the
timestamp is always visible (no hover-only).

---------

Co-authored-by: Etienne <45695613+etiennejouan@users.noreply.github.com>
Co-authored-by: Félix Malfait <felix@twenty.com>
Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/command-menu/components/CommandMenuOpenContainer.tsx

@@ -8,6 +8,7 @@ import { RECORD_CHIP_CLICK_OUTSIDE_ID } from '@/object-record/record-table/const
 import { MENTION_MENU_DROPDOWN_CLICK_OUTSIDE_ID } from '@/ui/input/constants/MentionMenuDropdownClickOutsideId';
 import { SLASH_MENU_DROPDOWN_CLICK_OUTSIDE_ID } from '@/ui/input/constants/SlashMenuDropdownClickOutsideId';
 import { RootStackingContextZIndices } from '@/ui/layout/constants/RootStackingContextZIndices';
+import { NAVIGATION_DRAWER_CLICK_OUTSIDE_ID } from '@/ui/navigation/navigation-drawer/constants/NavigationDrawerClickOutsideId';
 import { PAGE_HEADER_COMMAND_MENU_BUTTON_CLICK_OUTSIDE_ID } from '@/ui/layout/page-header/constants/PageHeaderCommandMenuButtonClickOutsideId';
 import { currentFocusIdSelector } from '@/ui/utilities/focus/states/currentFocusIdSelector';
 import { useListenClickOutside } from '@/ui/utilities/pointer-event/hooks/useListenClickOutside';
@@ -76,6 +77,7 @@ export const CommandMenuOpenContainer = ({
     callback: handleClickOutside,
     listenerId: 'COMMAND_MENU_LISTENER_ID',
     excludedClickOutsideIds: [
+      NAVIGATION_DRAWER_CLICK_OUTSIDE_ID,
       PAGE_HEADER_COMMAND_MENU_BUTTON_CLICK_OUTSIDE_ID,
       LINK_CHIP_CLICK_OUTSIDE_ID,
       RECORD_CHIP_CLICK_OUTSIDE_ID,