or-patterns: check_match: remove `top_pats_hack` for `check_for_bindings_named_same_as_variants`.
or-patterns: check_match: remove `top_pats_hack` for `check_for_bindings_named_same_as_variants`.

aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust