Fix cache and initialization tests

[jClugstor]

Checklist

• Appropriate tests were added
• Any code changes were done in a way that does not break public API
• All documentation related to code changes were updated
• The new code follows the
  contributor guidelines, in particular the SciML Style Guide and
  COLPRAC.
• Any new documentation only uses public API

Additional context

Oops, I could have sworn I made this PR last week
The cache tests that are @test_nowarn were failing because of the new ADTypes integration for OrdinaryDiffEq. Setting the chunk_size to 1 should be unecessary, since that will happen automatically anyway.

[jClugstor]

This is strange... interface tests are failing for only the x86 tests. I can't really reproduce locally since I don't have an x86 machine, hmm

[devmotion]

I can't really reproduce locally since I don't have an x86 machine, hmm

IIRC you don't need a special machine, you just have to run 32bit julia (on eg a 64bit machine).

[jClugstor]

Oh cool thanks, I'll check that out then.

[ChrisRackauckas]

I think that's something in OrdinaryDiffEq. Should look into, but it doesn't block this.