Point optimizations for vdex.

- Do not record assignability due to not optimized CHECKCAST.
- Do not record that j.l.Object must not be assignable to other types.
- Chase the super class boundary to avoid recording a dependency
  on a local class. This avoids doing type resolution of that class when
  verifying the VerifierDeps.

Test: test-art-host
bug: 30937355
Change-Id: Ibcee205451f23958c759ddcca7f88fe9003d37a9