🚀 [Feature][Webapp] On open ``/chat`` page close mini chat window

Created by: Elweyn

🚀 Feature

When I go on the /chat page it is strange to see the mini chat still open. Would be nice if the mini chat would be closed when the overview of chats is opened.

🤖 ToDo

• Close mini chat when opening /chat page
  • select the former chat partner on the mini chat on the /chat page
    • room on /chat page is not selected yet
    • especially if the room is not loaded already
• on clicking the chat button on a new user profile and → change mini chat partner to actual profile