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/settings/components/SettingsNavigationDrawerItem.tsx

@@ -24,7 +24,7 @@ export const SettingsNavigationDrawerItem = ({
     end: item.matchSubPages === false,
   });
 
-  const isActive = !!matchResult && !hasActiveSubItem;
+  const isActive = !!item.path && !!matchResult && !hasActiveSubItem;
 
   if (isDefined(item.isHidden) && item.isHidden) {
     return null;
@@ -37,7 +37,7 @@ export const SettingsNavigationDrawerItem = ({
           indentationLevel={item.indentationLevel}
           subItemState={subItemState}
           label={item.label}
-          to={href}
+          to={href || undefined}
           Icon={item.Icon}
           active={isActive}
           soon={item.soon}
@@ -53,7 +53,7 @@ export const SettingsNavigationDrawerItem = ({
       indentationLevel={item.indentationLevel}
       subItemState={subItemState}
       label={item.label}
-      to={href}
+      to={href || undefined}
       Icon={item.Icon}
       active={isActive}
       soon={item.soon}