[MatrixRTC] Sticky Events support (MSC4354)

[toger5]

Depends on #5028

This PR adds support for sticky events in the MatrixRTCSession:

• send sticky events instead of state events
• update the call memberships based on sticky events instead of membership changes.
• resend the current membership if the sticky event times out with an updated expiration ts (This is not the final solution. the sticky event timeout in iteself is enough. no expiration needed on the event content)

[toger5]

temp review

[toger5]

Wondering if we really want to make this configurable?
It would be great if we can just always make it listen to this?
Not sure its possible however...
Do you have an idea for a case where "always on" would break?

[BillCarsonFr]

So you can do both at the same time? Or does it fall back to state on some trigger?
If this is temporary, it might be worth a comment to kill state as soon as event/sticky is deployed enough?

[toger5]

this in combination with:
this.roomSubset.on(RoomEvent.StickyEvents, this.onStickyEventUpdate);
will result in two calls to recalculateSessionMembers once via refreshRoom -> onRTCSessionMemberUpdate -> recalculateSessionMembers And a second time throughonStickyEventUpdate->`recalculateSessionMembers.

Or is there any check so one of them gets ignored?

A possible solution would be to check if the associated room already has a session (in onRoom) and if so, we do not call refresh room? So it only gets called on creating a new session?

This logic maybe should be applied to all of this file. refreshRoom should be: refreshSessionStore/Map and than we expect the session itself to listen to all the evnt updates. Listeners in the SessionManager only are responsible to find out if new sessions need to be created!

[BillCarsonFr]

So you can do both at the same time? Or does it fall back to state on some trigger?
If this is temporary, it might be worth a comment to kill state as soon as event/sticky is deployed enough?

[robintown]

I see just one blocker here which is the logging issue:

[Half-Shot]

$ yarn lint:types:src && yarn lint:types:module_system
$ tsc --noEmit --jsx react && tsc --noEmit --jsx react -p playwright
Error: matrix-js-sdk/src/matrixrtc/MatrixRTCSession.ts(53,34): error TS2307: Cannot find module 'src/matrix.ts' or its corresponding type declarations.
Error: matrix-js-sdk/src/matrixrtc/MembershipManager.ts(49,34): error TS2307: Cannot find module 'src/matrix.ts' or its corresponding type declarations.