[Bug][compiler-v2] Internal complier bug "struct not defined" triggered

[vineethk]

🐛 Bug

When we compile the following code in v2 (taken from third_party/move/move-compiler-v2/tests/checking/inlining/resources_invalid.move):

module 0x42::objects {

    struct ReaderRef<phantom T: key> has store {
        addr: address
    }

    public inline fun reader<T: key>(ref: &ReaderRef<T>): &T {
        borrow_global<T>(ref.addr)
    }
}

module 0x42::token {
    use 0x42::objects as obj;

    struct Token has key { val: u64 }

    public fun get_value(ref: &obj::ReaderRef<Token>): u64 acquires Token {
        obj::reader(ref).val
    }
}

We get an internal compiler bug "struct not defined".

If we use the v1 compiler, we get this error instead:

- Error: error[E14002]: Inlined code invalid in this context
-   ┌─ TEMPFILE:7:26
-   │
- 7 │         borrow_global<T>(ref.addr)
-   │                          ^^^ After inlining: invalid storage operation on external type `0x42::objects::ReaderRef`

[rahxephon89]

@vineethk, this may related to the visibility issue on structs. My PR should be able to fix it.