Update subresource_filter tests to expect RenderFrameHost change on same-site navigation

With RenderDocument, cross-document navigations will use new
RenderFrameHosts (and RenderViewHosts, RenderWidgetHosts, etc for
main frame navigations). This CL updates some subresource_filter
tests that didn't expect those changes.

Bug: 936696
Change-Id: I852f7378f165a73485c8def8349a18e7ad2da3ae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4353353


Reviewed-by: Charlie Harrison <csharrison@chromium.org>
Reviewed-by: Josh Karlin <jkarlin@chromium.org>
Commit-Queue: Rakina Zata Amni <rakina@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1148179}