[Bug][move-compiler-v2] Mysterious error message about variants in use_struct_overlap_with_module test case

[brmataptos]

🐛 Bug

V1 and V2 (when using language V1) both successfully compile the test case use_struct_overlap_with_module.move:

• ./third_party/move/move-compiler-v2/tests/checking-lang-v1/use_struct_overlap_with_module.move
• ./third_party/move/move-compiler/tests/move_check/expansion/use_struct_overlap_with_module.move

However, when V2 compiler builds for language V2, it yields a weird error message on this case:

• ./third_party/move/move-compiler-v2/tests/more-v1/expansion/use_struct_overlap_with_module.move

% cat ./third_party/move/move-compiler-v2/tests/more-v1/expansion/use_struct_overlap_with_module.exp                                                       

Diagnostics:
warning: unused alias
  ┌─ tests/more-v1/expansion/use_struct_overlap_with_module.move:7:14
  │
7 │     use 0x2::X::{Self, S as X};
  │              ^ Unused 'use' of alias 'X'. Consider removing it

error: variants not allowed in this context
  ┌─ tests/more-v1/expansion/use_struct_overlap_with_module.move:8:27
  │
8 │     struct A { f1: X, f2: X::S }
  │                           ^^^^

It looks like a bug in the name resolution related to structs/variants.