The `useBudgetTabContent` hook was throwing an error when `data` prop was undefined. This commit adds a check to ensure that `data` is defined before accessing its properties.
- Fix the budget display issue where monthly budgets were showing four amounts instead of one.
- Resolve the functionality of the "Edit Budget" button.
Splits the BudgetTabContent component into smaller, more manageable components to improve code organization and maintainability. The UI and logic are separated into distinct components while preserving the original functionality.
