Fix navigation and settings UI polish (#21523)

## Summary

This PR groups the requested UI polish pass across navigation, settings,
AI settings, data model, community/lab, and dashboard chips.

### Navigation and drawer polish
- Smooths app/settings route switching with a 300ms content transition.
- Smooths app menu/settings menu drawer swaps with a fade transition
while preserving the existing drawer dimensions.
- Keeps navigation and AI chat history panes mounted to avoid flicker
when switching tabs.
- Aligns the first app/settings section with the AI chat history section
title.
- Removes the main app navigation "Other" section.
- Aligns the settings exit header with the workspace switcher header.
- Sets the settings exit icon gap to 8px, uses the small icon stroke
token, and keeps the icon color on text-secondary.
- Makes the workspace switcher button 28px high inside its 32px
container, moves the dropdown up so the workspace name does not jump,
and keeps a 2px gap between header icon buttons.
- Moves Settings below Support in the workspace switcher menu.
- Pins the Advanced toggle to the bottom of the settings drawer and
aligns its right padding with nav items.

### Settings surface polish
- Fixes vertically cropped dropdown menu headers.
- Makes wizard parent titles tertiary when a nested wizard title is
visible.
- Places danger-zone buttons side by side.
- Uses a 32px Visualize button.
- Restores 8px top/bottom padding on settings tables.
- Separates AI overview counts into three columns like layout overview.
- Adds separators inside setting cards, including the Smart Model / Fast
Model card.
- Groups lab/early-access toggles into one card with separators and
full-width row backgrounds.
- Replaces deprecated Enterprise adornment tags with the Organization
adornment on gated AI/security/settings surfaces.
- Uses the Discord brand icon in Community while keeping the standard
icon component rendering pattern.
- Tightens Skills/Tools search-to-table spacing so switching tabs does
not shake the table top.
- Fixes the small gap in nested navigation breadcrumbs between Emails
and Calendars.

### Dashboard/data table polish
- Fixes vertically cropped "Not shared" chips on dashboards.
- Keeps table row/header spacing stable after the settings table padding
restoration.

## Validation

- `npx nx lint:diff-with-main twenty-front`
- `npx tsc -p packages/twenty-front/tsconfig.json --noEmit`
- Manual Chrome pass on `apple.localhost:3001` for profile, app
navigation, workspace switcher, AI overview/models/skills/tools/usage,
community/lab, data model, new-field wizard, and dashboards.

## Visual QA

### Settings surface fixes

<img width="1324" height="2668" alt="Settings surface fixes before/after
board"
src="https://github.com/user-attachments/assets/312131fa-3922-4724-9460-46fd373754d1"
/>

### Navigation drawer fixes

<img width="1324" height="1816" alt="Navigation drawer fixes
before/after board"
src="https://github.com/user-attachments/assets/ca0b29e5-e393-46c0-81f7-e6bed2557b59"
/>

### Tables, wizards, gates and chips

<img width="1324" height="2242" alt="Tables, wizards, gates and chips
before/after board"
src="https://github.com/user-attachments/assets/5f358240-c31c-4c15-8ca8-04ed761fbf85"
/>

packages/twenty-front/src/loading/components/LeftPanelSkeletonLoader.tsx

@@ -19,7 +19,7 @@ const StyledAnimatedContainer = styled(motion.div)`
   flex-shrink: 0;
   height: 100%;
   overflow: hidden;
-  padding: ${themeCssVariables.spacing[3]} 0 ${themeCssVariables.spacing[4]}
+  padding: ${themeCssVariables.spacing[2]} 0 ${themeCssVariables.spacing[4]}
     ${themeCssVariables.spacing[2]};
 `;