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/editor/src/display_map/fold_map.rs

@@ -884,10 +884,10 @@ impl sum_tree::Item for Fold {
 
     fn summary(&self) -> Self::Summary {
         FoldSummary {
-            start: self.range.start.clone(),
-            end: self.range.end.clone(),
-            min_start: self.range.start.clone(),
-            max_end: self.range.end.clone(),
+            start: self.range.start,
+            end: self.range.end,
+            min_start: self.range.start,
+            max_end: self.range.end,
             count: 1,
         }
     }
@@ -919,10 +919,10 @@ impl sum_tree::Summary for FoldSummary {
 
     fn add_summary(&mut self, other: &Self, buffer: &Self::Context) {
         if other.min_start.cmp(&self.min_start, buffer) == Ordering::Less {
-            self.min_start = other.min_start.clone();
+            self.min_start = other.min_start;
         }
         if other.max_end.cmp(&self.max_end, buffer) == Ordering::Greater {
-            self.max_end = other.max_end.clone();
+            self.max_end = other.max_end;
         }
 
         #[cfg(debug_assertions)]
@@ -934,16 +934,16 @@ impl sum_tree::Summary for FoldSummary {
             }
         }
 
-        self.start = other.start.clone();
-        self.end = other.end.clone();
+        self.start = other.start;
+        self.end = other.end;
         self.count += other.count;
     }
 }
 
 impl<'a> sum_tree::Dimension<'a, FoldSummary> for FoldRange {
     fn add_summary(&mut self, summary: &'a FoldSummary, _: &MultiBufferSnapshot) {
-        self.0.start = summary.start.clone();
-        self.0.end = summary.end.clone();
+        self.0.start = summary.start;
+        self.0.end = summary.end;
     }
 }
 

crates/editor/src/display_map/inlay_map.rs

@@ -283,7 +283,7 @@ impl<'a> Iterator for InlayChunks<'a> {
                 self.output_offset.0 += prefix.len();
                 let mut prefix = Chunk {
                     text: prefix,
-                    ..chunk.clone()
+                    ..*chunk
                 };
                 if !self.active_highlights.is_empty() {
                     let mut highlight_style = HighlightStyle::default();
@@ -322,7 +322,7 @@ impl<'a> Iterator for InlayChunks<'a> {
                         next_inlay_highlight_endpoint = range.end - offset_in_inlay.0;
                         highlight_style
                             .get_or_insert_with(|| Default::default())
-                            .highlight(style.clone());
+                            .highlight(*style);
                     }
                 } else {
                     next_inlay_highlight_endpoint = usize::MAX;