feat: Integrated tab UI updates (#8516)

## Summary
Next iteration of the integrated tab/top menu

## Changes
- **What**:  
- make integrated default, rename old to legacy
- move feedback to integrated
- fix user icon shapes
- remove comfy cloud text in top bar, move to canvas stats
- add chevron to C logo menu
- move help back to sidebar
   - remove now unused help top positioning code

## Screenshots (if applicable)
<img width="428" height="148" alt="image"
src="https://github.com/user-attachments/assets/725025b7-4982-4f61-be11-8aabb0a1faff"
/>
<img width="264" height="187" alt="image"
src="https://github.com/user-attachments/assets/91fa5e92-df08-4467-9bc5-50a614d9b8aa"
/>
<img width="1169" height="220" alt="image"
src="https://github.com/user-attachments/assets/68c81bea-0cff-48df-8303-a6231a1d2fc4"
/>
<img width="242" height="207" alt="image"
src="https://github.com/user-attachments/assets/5a10f40e-83ae-44c3-9434-3dbe87ba30e2"
/>
<img width="302" height="222" alt="image"
src="https://github.com/user-attachments/assets/27fcc638-5fff-4302-9a1f-066227aafd86"
/>

---------

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: github-actions <github-actions@github.com>

src/platform/settings/constants/coreSettings.ts

@@ -570,10 +570,11 @@ export const CORE_SETTINGS: SettingParams[] = [
     category: ['Appearance', 'General'],
     name: 'Tab Bar Layout',
     type: 'combo',
-    options: ['Default', 'Integrated'],
-    tooltip:
-      'Controls the layout of the tab bar. "Integrated" moves Help and User controls into the tab bar area.',
-    defaultValue: 'Default'
+    options: ['Default', 'Legacy'],
+    tooltip: 'Controls the elements contained in the integrated tab bar.',
+    defaultValue: 'Default',
+    migrateDeprecatedValue: (value: unknown) =>
+      value === 'Integrated' ? 'Default' : value
   },
   {
     id: 'Comfy.UseNewMenu',