feat: move support links to workspace switcher (#16653)

## Summary
Move the Support and Documentation links from the bottom left navigation
drawer to the workspace switcher dropdown menu.

## Changes
- **Workspace Switcher**: Added Support (conditional) and Documentation
links before Log out
- **Settings Navigation**: Added Support and Documentation links in the
Other section
- **Support visibility**: Support link only appears when FrontChat is
configured (not waiting for script to load)
- **FrontChat loading**: Created `SupportChatEffect` component to ensure
FrontChat script loads at app startup for popup notifications
- **Bug fix**: Fixed settings navigation items without a path appearing
highlighted
- **Cleanup**: Removed unused `SupportDropdown`, `SupportButton`, and
`SupportButtonSkeletonLoader` components
- **Hidden**: Temporarily commented out Integrations page

## Screenshots
The Support and Documentation links now appear in:
1. Workspace switcher dropdown (top left)
2. Settings navigation (Other section)

packages/twenty-front/src/modules/app/components/AppRouterProviders.tsx

@@ -21,6 +21,7 @@ import { BaseThemeProvider } from '@/ui/theme/components/BaseThemeProvider';
 import { UserThemeProviderEffect } from '@/ui/theme/components/UserThemeProviderEffect';
 import { PageFavicon } from '@/ui/utilities/page-favicon/components/PageFavicon';
 import { PageTitle } from '@/ui/utilities/page-title/components/PageTitle';
+import { SupportChatEffect } from '@/support/components/SupportChatEffect';
 import { UserAndViewsProviderEffect } from '@/users/components/UserAndViewsProviderEffect';
 import { UserProvider } from '@/users/components/UserProvider';
 import { WorkspaceProviderEffect } from '@/workspace/components/WorkspaceProviderEffect';
@@ -66,6 +67,7 @@ export const AppRouterProviders = () => {
                           </DialogComponentInstanceContext.Provider>
                         </SnackBarProvider>
                         <MainContextStoreProvider />
+                        <SupportChatEffect />
                       </PrefetchDataProvider>
                       <PageChangeEffect />
                     </ObjectMetadataItemsProvider>