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/vim/src/test/neovim_backed_test_context.rs

@@ -292,12 +292,7 @@ impl NeovimBackedTestContext {
             register: '"',
             state: self.shared_state().await,
             neovim: self.neovim.read_register('"').await,
-            editor: self
-                .read_from_clipboard()
-                .unwrap()
-                .text()
-                .unwrap()
-                .to_owned(),
+            editor: self.read_from_clipboard().unwrap().text().unwrap(),
         }
     }
 

crates/vim/src/test/neovim_connection.rs

@@ -453,7 +453,7 @@ impl NeovimConnection {
         };
 
         if self.data.back() != Some(&state) {
-            self.data.push_back(state.clone());
+            self.data.push_back(state);
         }
 
         (mode, ranges)

crates/vim/src/test/vim_test_context.rs

@@ -225,7 +225,7 @@ impl VimTestContext {
         VimClipboard {
             editor: self
                 .read_from_clipboard()
-                .map(|item| item.text().unwrap().to_string())
+                .map(|item| item.text().unwrap())
                 .unwrap_or_default(),
         }
     }