Fix: Prevent Multiple Search Icons in Command Menu (#10424)

Description:
This PR fixes an issue where clicking the search button multiple times
caused multiple search icons to appear in the search bar. The issue was
caused by continuously appending new items to the navigation stack
instead of replacing the existing search page entry.

Before:


https://github.com/user-attachments/assets/1abc4223-6295-4eea-b276-00e4539a2992



After:



https://github.com/user-attachments/assets/04d3a306-f3ca-4d3d-9028-9e4b4574e6a6

---------

Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>

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

@@ -154,7 +154,11 @@ export const useCommandMenu = () => {
           ? []
           : snapshot.getLoadable(commandMenuNavigationStackState).getValue();
 
-        if (resetNavigationStack) {
+        const itemIsAlreadyInStack = currentNavigationStack.some(
+          (item) => item.page === page,
+        );
+
+        if (resetNavigationStack || itemIsAlreadyInStack) {
           set(commandMenuNavigationStackState, [{ page, pageTitle, pageIcon }]);
         } else {
           set(commandMenuNavigationStackState, [