Fix clippy errors (Mac) (#9440)

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# Description

Was getting errors when running the clip checks on another PR.
Applied the suggested fixes.


<img width="1792" alt="image"
src="https://github.com/nushell/nushell/assets/432535/bec30bd9-307d-4877-9eb8-1f8f3ed3edd9">


<img width="1527" alt="image"
src="https://github.com/nushell/nushell/assets/432535/f540da61-aa81-4a9e-9948-46d8d45afecb">

crates/nu-parser/src/parse_keywords.rs

@@ -2637,7 +2637,7 @@ pub fn parse_overlay_use(working_set: &mut StateWorkingSet, call: Box<Call>) ->
                 (
                     new_name
                         .map(|spanned| spanned.item)
-                        .unwrap_or(String::from_utf8_lossy(&new_module.name).to_string()),
+                        .unwrap_or_else(|| String::from_utf8_lossy(&new_module.name).to_string()),
                     new_module,
                     module_id,
                     true,