The code was only entering the blocked state if the user was speaking,
which often won't be the case when another person starts speaking because
we'll have pressed the button but not got the ack back from the server
yet. Add the transmitblocked flag instead so we don't enter that state
again if we've already decided we've been blocked.
We were also starting with blocked = false and so resetting it when it
shouldn't have been reset.
Also requires https://github.com/matrix-org/matrix-js-sdk/pull/2502
To be consistent with normal view and avoid nested dialogs.
Also disable space for the PTT key when the feedback dialog is visible,
since otherwise you can't type a space. Involves some rearrangement of
modal state.
Remove accidentally comitted vite port config.
Play the 'blocked' sound effect whenever the user is till holding
the button but can't speak anymore, whether they've been cut off
by someone else or have reached their time limit.
