Fixes https://github.com/vector-im/riot-web/issues/13479
This looks to have been caused by something to do with the app load order, though where is a mystery. The view change seems to fire for the same page type despite a dispatch that says to change the view type.
Instead of debugging it too much further, we'll just patch around it.
This commit also makes the settings link use a more safe approach to viewing the user info - not going through the dispatcher means we are at the mercy of browser behaviour when we already have a loop which deals with this.
This fixes a common React warning we see. Most of these components should be using constructors instead, however componentDidMount is just as good (and doesn't require converting most of these).
Conversion to classes will be done in a later stage of React warning fixes.
For https://github.com/vector-im/riot-web/issues/12877
Adds a UserView that contains a MainSplit with an empty div
and a RightPanel, preset to the given member.
UserView fetches the profile and creates a fake member, which
it passed on to the RightPanel.
this doesn't use the view_user action on purpose, to avoid any
interference of the UserView when trying to view a room member.
