[Task] Room preview should try to update the local data

[ganfra]

Currently, using the room preview api for room we already know, like those with invited or knocked states, is waiting for the server to return, because we want to ensure the data is accurate.
Could be nice to return the local data right away, but still try to fetch data from server, and save this updated data in the store.

[bnjbvr]

It's a nice idea, but how would that work?

• The caller knows the information may be outdated, and may call again later?
• The caller provides a callback that's called when the server response has been received?
• or something else you had in mind?

[mxandreas]

It's a nice idea, but how would that work?

My understanding was that we refresh the data anyway when the preview is opened. We just would not block opening the preview because of that. Just my 2c.