embedded gui should respond when enclosing environment changes the projectId it passes in

[benjiwheeler]

Expected Behavior

if the enclosing environment where gui is embedded changes the projectId it passes in, gui should respond by calling projectState.setProjectId(<new project id>).

project-fetcher-hoc is probably the place to do this.

Actual Behavior

Only responds to the initial setting -- after that, the setting is ignored completely.

[benjiwheeler]

Should be resolved by #3391