There is no need for setting the availability of desktop sharing anymore. It can
now be detected on the spot.

The reson for the previous code was that way back when browser extensions were
needed, it was possible to start a conference without desktopo sharing support
and get it afterwards. This is no longer the case.

Multiple requests for checkUserRemoteControlSupport can be in
flight simultaneously. Order of promise resolution is not
guaranteed. It is possible for Request A and Request B to be
in flight and then Request B's promise chain resolves first.
Request A could have encountered errors and then resolve. Then
what could happen is checkUserRemoteControlSupport returns true
for remote control support due to Request B and the UI updates.
But then checkUserRemoteControlSupport returns false for
remote control support due to Request A's error and the UI
updates to hide remote control.

* fix(react/participant): store display name in redux

* feat(remotecontrol): Add option to display the authorization dialog in meet

* feat(remotecontrol): Enable ESLint and Flow

For lack of a better word/phrase, I'm calling all changes coding style.
I'm targeting readability through naming and syntax.