Auto merge of #125531 - surechen:make_suggestion_for_note_like_drop_lint, r=Urgau

Make lint: `lint_dropping_references` `lint_forgetting_copy_types` `lint_forgetting_references` give suggestion if possible.

This is a follow-up PR of  #125433. When it's merged, I want change lint `dropping_copy_types` to use the same `Subdiagnostic` struct `UseLetUnderscoreIgnoreSuggestion` which is added in this PR.

Hi, Thank you(`@Urgau` ) again for your help in the previous PR.  If your time permits, please also take a look at this one.

r? compiler

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Author: bors