Fixes https://github.com/vector-im/riot-web/issues/11663
Member info is special because it has parameters associated with it. What was happening was the RightPanelStore was seeing that it was already on member info and deciding to hide the pane instead. What we do now is consider any phase change with parameters (such as the user to pass to member info) as a proper phase change.
Clicking on the member icon was fine, but clicking on the file panel wouldn't bring it up - it had to be clicked a second time to actually show the panel.
This lays a foundation for redirecting all the traffic through the new store, but for now the core parts of the app need to stop caring if the right panel is open.
