Fix clippy::redundant_clone lint violations (#36558)

This removes around 900 unnecessary clones, ranging from cloning a few
ints all the way to large data structures and images.

A lot of these were fixed using `cargo clippy --fix --workspace
--all-targets`, however it often breaks other lints and needs to be run
again. This was then followed up with some manual fixing.

I understand this is a large diff, but all the changes are pretty
trivial. Rust is doing some heavy lifting here for us. Once I get it up
to speed with main, I'd appreciate this getting merged rather sooner
than later.

Release Notes:

- N/A

crates/markdown_preview/src/markdown_preview_view.rs

@@ -115,8 +115,7 @@ impl MarkdownPreviewView {
                         pane.activate_item(existing_follow_view_idx, true, true, window, cx);
                     });
                 } else {
-                    let view =
-                        Self::create_following_markdown_view(workspace, editor.clone(), window, cx);
+                    let view = Self::create_following_markdown_view(workspace, editor, window, cx);
                     workspace.active_pane().update(cx, |pane, cx| {
                         pane.add_item(Box::new(view.clone()), true, true, None, window, cx)
                     });