These are tests that fail in the next commit without this flag. This does not add -verify-ignore-unrelated to all tests with -verify, only the ones that would fail without it. This is NFC since this flag is currently a no-op.
Like other `EnumTypeInfo`s, the `TypeInfo` subclasses `EnumTypeInfoBase` and store the `EnumImplStrategy`.
SE-0426 was accepted.