Unibox | 🔧 Improve “Mark Conversations as Read” in Unibox

Description: Fix issues with the “Mark as Read” feature in the Unibox. Currently:

1. If a user replies without clicking “Mark as Read,” the conversation remains unread.

2. Sometimes, even after clicking “Mark as Read,” the status does not save correctly and the user has to click again.

Type: Improvement / Bug Fix

Initial Status: Backlog