Add more functionality to right clicking in the chat window

[GioSDA]

Based off of what was requested in #32423

Implements a button to both spectate and invite to multiplayer lobby.

Spectate
https://github.com/user-attachments/assets/d0858736-9ed0-4f49-9ab4-5cfd333579a0

Invite to Lobby
https://github.com/user-attachments/assets/8d4148e2-6a5f-48e7-9cb2-add112fa3173

Code is basically just slightly modified copy/paste from UserPanel.cs

[GAMIS65]

user.IsOnline doesn't get updated in real-time, so whenever someone goes online after you, it won't work.

[peppy]

user.IsOnline doesn't get updated in real-time, so whenever someone goes online after you, it won't work.

I noticed this while testing, but don't see this as the end of the world.

Using the MetadataClient flow isn't possible here because we aren't watching for user presences. I'd be very hesitant to turn this on every time chat is open, so think this should be addresses in the future (for reference, stable gets around this by always sending online/offline packets, with extra metadata being on-request as we already have it in MetadataClient).

I've added documentation around this and renamed some variable to hopefully make things more explicit.

[GAMIS65]

Using the MetadataClient flow isn't possible here because we aren't watching for user presences.

Friend presences do update in real-time, so at least adding a check will eliminate some cases where the button should appear but doesn’t, and vice versa.

[peppy]

I'm not too sure what you're saying. I don't see how we can check against both. In the case a friend is offline it's going to return a null, which is the same as the unknown case. Unless you mean also checking the friend flag. Which is not going to happen (too complicated for what it is).

[bdach]

Can we just... not check the online flag at all in any capacity? I feel like while suboptimal, it's better what this currently is going to likely be which is state being frozen at the point of login more or less.

[peppy]

Sounds good, have removed.

[GAMIS65]

I may have worded it poorly, what I meant is just checking the MetadataClient for the user presence.

if (user.IsOnline || metadataClient?.GetPresence(user.OnlineID) != null)

2025-03-19.08-19-44.mp4

[bdach]

@GAMIS65 you're not understanding what you're being told. checking MetadataClient is useless here, because you have to call MetadataClient.BeginWatchingUserPresence() for that to do what you think it does reliably which is annoying to infeasible in the context of chat