popupContext ws subscription is added.

[barisgul15]

Motivation and Context

Fixes the issue Popup chat does not update #1199

Description

When pop-up chat is opened, a new web socket(ws) is created so that the new chat can work properly. When examined, the only difference between normal-chat(chat near video) and popup chat is that, normal chat subscribes a void handler when created, but popup chat does not do that. As a solution, a void handler is created on popup.ts and the web socket subscribed via this handler and popup chat started working.

Steps for Testing

Prerequisites:

• 1 Lecturer

1. Log in
2. Create a course and enable chat
3. Create a lecture and open the chats lecture
4. Open the popup chat and test sendin messages in both chats and check whether both checks are updated accordingly.

Screenshots

[github-actions]

Your Testserver will be ready at https://1253.test.live.mm.rbg.tum.de in a few minutes.

Logins

Kurs1	Kurs2	Kurs3	Kurs4
public	public	loggedin	enrolled
prof1	prof1	prof2	prof1 prof2
student1 student2 student3	student1 student2	student2 student3	student1 student2

[YiranDuan721]

I tested locally and see the popup chat works correctly with the change. New posts and reactions from the sidebar chat and from another user in another browser are immediately updated in the popup chat; messages and reactions sent in the popup-chat are also updated in other windows.
However I think the comments are redundant and can be removed.

[alexanderstephan]

Awesome! 🎉 A surprisingly simple fix. I would like to merge and deploy this as soon as possible, so we can use it in the lecture on Wednesday.

I don't really mind the comments.

[alexanderstephan]

@meandaD If it is okay for you, I would merge it as it is to avoid further delays. Feel free to press merge yourself.

[YiranDuan721]

Awesome! 🎉 A surprisingly simple fix. I would like to merge and deploy this as soon as possible, so we can use it in the lecture on Wednesday.

I don't really mind the comments.

I gree with this