cc_cmake_snapshot: drop Modules field

Use Modules_host, Modules_system or Modules_vendor instead

Also, fix test by adding libc++demangle to the ignored list.

Bug: 285204695
Test: m binder_sdk
Test: cd build/soong/cc && go test
Change-Id: I6c3eda83584bc910f8b73ffa0f36c3d7fce5f10b