Auto merge of #7516 - lf-:unwrap-or-default, r=xFrednet

Add `unwrap_or_else_default` lint

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*Please write a short comment explaining your change (or "none" for internal only changes)*

changelog: Add a new [`unwrap_or_else_default`] style lint. This will catch `unwrap_or_else(Default::default)` on Result and Option and suggest `unwrap_or_default()` instead.

diff --cc clippy_utils/src/lib.rs
Simple merge