Do two passes of `handle_opaque_type_uses_next`#147249

Merged

bors merged 7 commits intorust-lang:masterfrom

jackh726:opaque-type-fallback

Oct 14, 2025

Commits on Oct 3, 2025

Fix comment, change first_pass to error_on_missing_defining_use, remove the assert in favor over a comment, and change to & for &mut
jackh726
committed

Commits on Oct 5, 2025

Remove unneeded get_hidden_type
jackh726
committed

Commits on Oct 13, 2025

Review comments. Move resolve_vars_if_possible into fn and add test minimizations. Update comment and test.
jackh726
committed