Rollup merge of #143728 - LorrensP-2158466:refactor-resolve-extraction, r=petrochenkov

Resolve refactor: extraction of `finalize_module_binding` and `single_import_can_define_name`

This pr the work Vadim asked for in rust-lang/rust#142547 (comment). This part:
> finalize_module_binding/single_import_can_define_name extraction

Cherry-picked commits of b-naber. Extraction of 2 processes in `resolve_ident_in_module_unadjusted`:
- `finalize_module_binding`
- `single_import_can_define_name`

r? ```@petrochenkov```

Author: tgross35