Issue: Chat Automatically Closes on Page Reload

[Devyalamaddi]

When a user opens a chat with a specific user and reloads the page, the opened chat is automatically closed. This disrupts the user experience as the app does not retain the selected chat context after a page refresh.

Expected Behavior
The app should persist the selected chat so that, after reloading the page, the user is automatically returned to the chat they were viewing.

Current Behavior
The selectedUser state is reset to null on page reload, causing the opened chat to close. This requires the user to manually select the chat again.

Steps to Reproduce

1. Open a chat with a user.
2. Reload the page.
3. Observe that the opened chat is closed, and the user is returned to the default state.

Proposed Solution
Use localStorage to persist the selectedUser state. By storing the selectedUser object in localStorage as a string, we can retrieve it when the app initializes. This ensures the user's chat selection persists across page reloads.

Benefits
Improved user experience by retaining the chat context after a reload.
Aligns the application behavior with user expectations for a seamless chat experience.