Enable clippy::clone_on_copy (#8728)

This PR enables the
[`clippy::clone_on_copy`](https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_copy)
rule and fixes the outstanding violations.

Release Notes:

- N/A

crates/language/src/syntax_map.rs

@@ -1412,7 +1412,7 @@ fn insert_newlines_between_ranges(
             continue;
         }
 
-        let range_b = ranges[ix].clone();
+        let range_b = ranges[ix];
         let range_a = &mut ranges[ix - 1];
         if range_a.end_point.column == 0 {
             continue;