The new logic no longer includes non-generic parent types as part
of the type reference.
This also combines the 32- and 64-bit tests validations, since they
were identical for this test anyway.
Fix computation of generic params per level when a generic type is
nested in a non-generic one. For example, for the following code:
```
class A {
class B<T, U> {
}
}
```
Fix the array of generic params per level from [2] to [0, 2].
rdar://103457629
