[Ravenwood] Rename all-updatable-modules-system-stubs

all-updatable-modules-system-stubs is a stub, so it should be included
at the end, to avoid overriding real implementation.

Bug: 292141694
Test: ./ravenwood/scripts/run-ravenwood-tests.sh
Test: run `m` and make sure out/host/linux-x86/testcases/ravenwood-runtime
  doesn't have the un-renamed jar file.
Change-Id: I474f46b7e0844e5a887914226e5388bdf9486eb7