Fix/global env duplicate name error (#3590)

* fix: enhance environment name validation for global environments

* fix: improve environment name validation logic in CreateEnvironment component

* Update index.js

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Co-authored-by: Anoop M D <anoop.md1421@gmail.com>

packages/bruno-app/src/components/Environments/EnvironmentSettings/CreateEnvironment/index.js

@@ -11,7 +11,6 @@ const CreateEnvironment = ({ collection, onClose }) => {
   const dispatch = useDispatch();
   const inputRef = useRef();
 
-  // todo: Add this to global env too.
  const validateEnvironmentName = (name) => {
    return !collection?.environments?.some((env) => env?.name?.toLowerCase().trim() === name?.toLowerCase().trim());
  };