[Refactor] - Optimize useFetch hook using useCallback

[Lucas-Tisera]

Description

Added missing dependencies (url and reqOpt) to useCallback hook in useFetch.ts to resolve React Hook dependency warning. Applied proper memoization to refetch function for consistency with existing patterns.

Changes

• Added missing dependencies to useCallback
• Applied memoization to refetch function
• Maintained error handling pattern

Why

• Resolves React Hook dependency warning
• Ensures consistent memoization across the hook
• Prevents unnecessary function recreations