🔨 refactor(utils.ts): simplify snakeToSpaces function

🔨 refactor(utils.ts): simplify getConnectedNodes function
🔨 refactor(utils.ts): remove unused variable in groupByFamily function
The snakeToSpaces function has been simplified by removing the unnecessary variable declaration. The getConnectedNodes function has been simplified by removing the unnecessary variable declaration and returning the result directly. The groupedObj variable in the groupByFamily function is no longer used, so it has been removed.