Rollup merge of #102085 - chenyukang:code-refactor, r=cjgillot

Code refactoring smart_resolve_report_errors

`smart_resolve_report_errors` https://github.com/rust-lang/rust/blob/4ecfdfac51b159f68fce608792affb34a70e6f73/compiler/rustc_resolve/src/late/diagnostics.rs#L143
is almost 600 lines of code, we should do some code refactoring.