Remove onboarding flashes + close all dropdowns on CommandMenu close (#11483)

## Remove onboarding flashes

Tested:
- sign in with credentials
- sign in with social oAuth
- sign up with credentials
- multidomain
- single domain
- reset password

No more flashes, and code logic simplified!

## Close all dropdowns on CommandMenu close

Before:


https://github.com/user-attachments/assets/244ff935-3d40-47d5-a097-12d4cc3810dd


After:


https://github.com/user-attachments/assets/1de692f8-5032-404a-be74-025ebca67138

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/command-menu/hooks/useCommandMenu.ts

@@ -5,6 +5,7 @@ import { commandMenuSearchState } from '@/command-menu/states/commandMenuSearchS
 import { useNavigateCommandMenu } from '@/command-menu/hooks/useNavigateCommandMenu';
 import { isCommandMenuClosingState } from '@/command-menu/states/isCommandMenuClosingState';
 import { CommandMenuPages } from '@/command-menu/types/CommandMenuPages';
+import { useCloseAnyOpenDropdown } from '@/ui/layout/dropdown/hooks/useCloseAnyOpenDropdown';
 import { isDragSelectionStartEnabledState } from '@/ui/utilities/drag-select/states/internal/isDragSelectionStartEnabledState';
 import { useCallback } from 'react';
 import { IconDotsVertical } from 'twenty-ui/display';
@@ -12,6 +13,7 @@ import { isCommandMenuOpenedState } from '../states/isCommandMenuOpenedState';
 
 export const useCommandMenu = () => {
   const { navigateCommandMenu } = useNavigateCommandMenu();
+  const { closeAnyOpenDropdown } = useCloseAnyOpenDropdown();
 
   const closeCommandMenu = useRecoilCallback(
     ({ set }) =>
@@ -19,8 +21,9 @@ export const useCommandMenu = () => {
         set(isCommandMenuOpenedState, false);
         set(isCommandMenuClosingState, true);
         set(isDragSelectionStartEnabledState, true);
+        closeAnyOpenDropdown();
       },
-    [],
+    [closeAnyOpenDropdown],
   );
 
   const openCommandMenu = useCallback(() => {