fix(twenty-front): resolve the command menu item i18n rendering issue (#23913)

The most command menus item labels are `string`. The original logic
prevent it form being translated.

Additionally, the `i18n._()` can handle both `string` and
`MessageDescriptor` type, so it's safe to remove this logic.

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packages/twenty-front/src/modules/command-menu-item/utils/getCommandMenuItemLabel.ts

@@ -1,5 +1,4 @@
 import { i18n, type MessageDescriptor } from '@lingui/core';
-import { isString } from '@sniptt/guards';
 import { type Nullable } from 'twenty-shared/types';
 import { isDefined } from 'twenty-shared/utils';
 
@@ -10,5 +9,5 @@ export const getCommandMenuItemLabel = (
     return '';
   }
 
-  return isString(label) ? label : i18n._(label);
+  return i18n._(label);
 };