After toggling DarkConsole, force a user settings cache fill

Summary:
Ref T10078. Currently, you toggle DarkConsole and then load a page, but on the load we have to refill your settings cache since toggling DarkConsole dirtied it.

This is fine, except that it makes it harder to understand what's going on with queries on a page. Just force it to reload right away instead.

Test Plan: Toggled DarkConsole, reloaded page, no longer saw settings toggle-related cache fill.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10078

Differential Revision: https://secure.phabricator.com/D16044