* SuspenseList support in DevTools
This adds SuspenseList tags to DevTools so that the name properly shows
up.
It also switches to use the tag instead of Symbol type for Suspense
components. We shouldn't rely on the type for any built-ins since that
field will disappear from the fibers. How the Fibers get created is an
implementation detail that can change e.g. with a compiler or if we
use instanceof checks that are faster than symbol comparisons.
* Add SuspenseList test to shell app
* Updated DevTools shell ignore warning message to account for recent changes in warning text
* Update DevTools console patching to patch the parent window's console rather than the iframe, to more accurately simulate real usage environment
