Use new replace instead of <Navigate> for route replace navs

[david-crespo]

We have a few of these and they've never felt quite right. Now we can do them slightly earlier in the render cycle with loader={() => replace('/path')} thanks to remix-run/react-router#11811.

console/app/routes.tsx

Lines 215 to 218 in 07b6c15

	<Route index element={<Navigate to={pb.projects()} replace />} />
	{/* These are done here instead of nested so we don't flash a layout on 404s */}
	<Route path="projects/:project" element={<Navigate to="instances" replace />} />