Improve command menu animation (twentyhq#16197)

https://github.com/user-attachments/assets/c9ff288d-0e68-4877-af6b-8685a6bbeeaf


<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Removes legacy layout and refactors `CommandMenuPageLayout` to use
width-based animation with shared constants and close-animation cleanup.
> 
> - **UI/Command Menu**:
>   - **Refactor `CommandMenuPageLayout`**:
> - Switch to width/margin animation on `StyledSidePanelWrapper`; remove
side panel `x` translate animation.
>     - Use shared `COMMAND_MENU_SIDE_PANEL_WIDTH` constant.
> - Add close-state handling via `isCommandMenuClosingState` and
`useCommandMenuCloseAnimationCompleteCleanup` on animation completion.
> - Simplify props: remove `isSidePanelOpen`; rely on
`isCommandMenuOpenedState` and internal `shouldRenderContent`.
>   - **Cleanup**:
>     - Remove obsolete `CommandMenuLayout.tsx`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
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<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

Author: 2 people

packages/twenty-front/src/modules/object-record/components/CommandMenuLayout.tsx

@@ -126,9 +126,6 @@ export const CommandMenuPageLayout = ({
       >
         <StyledSidePanel
           initial={false}
-          animate={{
-            x: isCommandMenuOpened ? 0 : COMMAND_MENU_SIDE_PANEL_WIDTH,
-          }}
           transition={{
             duration: theme.animation.duration.normal,
           }}