HACK: allow apps with pre-release SDK RESTRICT AUTOMERGE

Revert before releasing
Let the apps built with pre-release Tiramisu SDK parse
+ fix a test that didn't expect REL builds to throw
  when checking for lettered versions

Test: build
Bug: 225745567
Bug: 231407096
Change-Id: I965c01b4453289c3e9a930180804728be0b5b045