fix(auth): mount react-hot-toast Toaster for auth feedback

[AnushKamble]

Changes Made

• Mounted the react-hot-toast <Toaster /> component in App.jsx
• Enabled toast notifications for login and registration flows
• Preserved existing authentication and routing behavior

Root Cause

toast.success() and toast.error() were already being called in the authentication flow, but the application did not mount a <Toaster /> component anywhere in the React tree. As a result, toast notifications were never rendered.

Files Modified

• RestroHub-FrontEnd/src/App.jsx

Testing & Verification

• No authentication logic modified
• No routing behavior changed
• No new dependencies added
• No package/config changes
• Minimal scoped fix with isolated frontend change

Closes #203

[rdodiya]

Hi @AnushKamble ,
Page is refreshed if we provide wrong credentials, page should not refresh after error message shown in toast.
Please fix this.

restrohub_212.mp4